Change the auth challenge 401 to be verbose trace. (#2021)

* fix: GITHUB_ENV in composite

* fix L0 Test

.github/workflows/build.yml

@@ -18,7 +18,7 @@ jobs:
   build:
     strategy:
       matrix:
-        runtime: [ linux-x64, linux-arm64, linux-arm, win-x64, osx-x64 ]
+        runtime: [ linux-x64, linux-arm64, linux-arm, win-x64, osx-x64, osx-arm64 ]
         include:
         - runtime: linux-x64
           os: ubuntu-latest
@@ -36,13 +36,17 @@ jobs:
           os: macOS-latest
           devScript: ./dev.sh
 
+        - runtime: osx-arm64
+          os: macOS-latest
+          devScript: ./dev.sh
+
         - runtime: win-x64
           os: windows-2019
           devScript: ./dev
 
     runs-on: ${{ matrix.os }}
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
 
     # Build runner layout
     - name: Build & Layout Release
@@ -78,7 +82,7 @@ jobs:
       run: |
         ${{ matrix.devScript }} test
       working-directory: src
-      if: matrix.runtime != 'linux-arm64' && matrix.runtime != 'linux-arm'
+      if: matrix.runtime != 'linux-arm64' && matrix.runtime != 'linux-arm' && matrix.runtime != 'osx-arm64'
 
     # Create runner package tar.gz/zip
     - name: Package Release

.github/workflows/codeql.yml

@@ -23,7 +23,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL

.github/workflows/release.yml

@@ -11,7 +11,7 @@ jobs:
     if: startsWith(github.ref, 'refs/heads/releases/') || github.ref == 'refs/heads/main'
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
 
     # Make sure ./releaseVersion match ./src/runnerversion
     # Query GitHub release ensure version is not used
@@ -51,24 +51,28 @@ jobs:
       linux-arm-sha: ${{ steps.sha.outputs.linux-arm-sha256 }}
       win-x64-sha: ${{ steps.sha.outputs.win-x64-sha256 }}
       osx-x64-sha: ${{ steps.sha.outputs.osx-x64-sha256 }}
+      osx-arm64-sha: ${{ steps.sha.outputs.osx-arm64-sha256 }}
       linux-x64-sha-noexternals: ${{ steps.sha_noexternals.outputs.linux-x64-sha256 }}
       linux-arm64-sha-noexternals: ${{ steps.sha_noexternals.outputs.linux-arm64-sha256 }}
       linux-arm-sha-noexternals: ${{ steps.sha_noexternals.outputs.linux-arm-sha256 }}
       win-x64-sha-noexternals: ${{ steps.sha_noexternals.outputs.win-x64-sha256 }}
       osx-x64-sha-noexternals: ${{ steps.sha_noexternals.outputs.osx-x64-sha256 }}
+      osx-arm64-sha-noexternals: ${{ steps.sha_noexternals.outputs.osx-arm64-sha256 }}
       linux-x64-sha-noruntime: ${{ steps.sha_noruntime.outputs.linux-x64-sha256 }}
       linux-arm64-sha-noruntime: ${{ steps.sha_noruntime.outputs.linux-arm64-sha256 }}
       linux-arm-sha-noruntime: ${{ steps.sha_noruntime.outputs.linux-arm-sha256 }}
       win-x64-sha-noruntime: ${{ steps.sha_noruntime.outputs.win-x64-sha256 }}
       osx-x64-sha-noruntime: ${{ steps.sha_noruntime.outputs.osx-x64-sha256 }}
+      osx-arm64-sha-noruntime: ${{ steps.sha_noruntime.outputs.osx-arm64-sha256 }}
       linux-x64-sha-noruntime-noexternals: ${{ steps.sha_noruntime_noexternals.outputs.linux-x64-sha256 }}
       linux-arm64-sha-noruntime-noexternals: ${{ steps.sha_noruntime_noexternals.outputs.linux-arm64-sha256 }}
       linux-arm-sha-noruntime-noexternals: ${{ steps.sha_noruntime_noexternals.outputs.linux-arm-sha256 }}
       win-x64-sha-noruntime-noexternals: ${{ steps.sha_noruntime_noexternals.outputs.win-x64-sha256 }}
       osx-x64-sha-noruntime-noexternals: ${{ steps.sha_noruntime_noexternals.outputs.osx-x64-sha256 }}
+      osx-arm64-sha-noruntime-noexternals: ${{ steps.sha_noruntime_noexternals.outputs.osx-arm64-sha256 }}
     strategy:
       matrix:
-        runtime: [ linux-x64, linux-arm64, linux-arm, win-x64, osx-x64 ]
+        runtime: [ linux-x64, linux-arm64, linux-arm, win-x64, osx-x64, osx-arm64 ]
         include:
         - runtime: linux-x64
           os: ubuntu-latest
@@ -86,13 +90,17 @@ jobs:
           os: macOS-latest
           devScript: ./dev.sh
         
+        - runtime: osx-arm64
+          os: macOS-latest
+          devScript: ./dev.sh
+
         - runtime: win-x64
           os: windows-2019
           devScript: ./dev
 
     runs-on: ${{ matrix.os }}
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
 
     # Build runner layout
     - name: Build & Layout Release
@@ -100,13 +108,6 @@ jobs:
         ${{ matrix.devScript }} layout Release ${{ matrix.runtime }}
       working-directory: src
 
-    # Run tests
-    - name: L0
-      run: |
-        ${{ matrix.devScript }} test
-      working-directory: src
-      if: matrix.runtime != 'linux-arm64' && matrix.runtime != 'linux-arm'
-
     # Create runner package tar.gz/zip
     - name: Package Release
       if: github.event_name != 'pull_request'
@@ -217,7 +218,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
 
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
 
     # Download runner package tar.gz/zip produced by 'build' job
     - name: Download Artifact
@@ -239,27 +240,43 @@ jobs:
           var releaseNote = fs.readFileSync('${{ github.workspace }}/releaseNote.md', 'utf8').replace(/<RUNNER_VERSION>/g, runnerVersion)
           releaseNote = releaseNote.replace(/<WIN_X64_SHA>/g, '${{needs.build.outputs.win-x64-sha}}')
           releaseNote = releaseNote.replace(/<OSX_X64_SHA>/g, '${{needs.build.outputs.osx-x64-sha}}')
+          releaseNote = releaseNote.replace(/<OSX_ARM64_SHA>/g, '${{needs.build.outputs.osx-arm64-sha}}')
           releaseNote = releaseNote.replace(/<LINUX_X64_SHA>/g, '${{needs.build.outputs.linux-x64-sha}}')
           releaseNote = releaseNote.replace(/<LINUX_ARM_SHA>/g, '${{needs.build.outputs.linux-arm-sha}}')
           releaseNote = releaseNote.replace(/<LINUX_ARM64_SHA>/g, '${{needs.build.outputs.linux-arm64-sha}}')
           releaseNote = releaseNote.replace(/<WIN_X64_SHA_NOEXTERNALS>/g, '${{needs.build.outputs.win-x64-sha-noexternals}}')
           releaseNote = releaseNote.replace(/<OSX_X64_SHA_NOEXTERNALS>/g, '${{needs.build.outputs.osx-x64-sha-noexternals}}')
+          releaseNote = releaseNote.replace(/<OSX_ARM64_SHA_NOEXTERNALS>/g, '${{needs.build.outputs.osx-arm64-sha-noexternals}}')
           releaseNote = releaseNote.replace(/<LINUX_X64_SHA_NOEXTERNALS>/g, '${{needs.build.outputs.linux-x64-sha-noexternals}}')
           releaseNote = releaseNote.replace(/<LINUX_ARM_SHA_NOEXTERNALS>/g, '${{needs.build.outputs.linux-arm-sha-noexternals}}')
           releaseNote = releaseNote.replace(/<LINUX_ARM64_SHA_NOEXTERNALS>/g, '${{needs.build.outputs.linux-arm64-sha-noexternals}}')
           releaseNote = releaseNote.replace(/<WIN_X64_SHA_NORUNTIME>/g, '${{needs.build.outputs.win-x64-sha-noruntime}}')
           releaseNote = releaseNote.replace(/<OSX_X64_SHA_NORUNTIME>/g, '${{needs.build.outputs.osx-x64-sha-noruntime}}')
+          releaseNote = releaseNote.replace(/<OSX_ARM64_SHA_NORUNTIME>/g, '${{needs.build.outputs.osx-arm64-sha-noruntime}}')
           releaseNote = releaseNote.replace(/<LINUX_X64_SHA_NORUNTIME>/g, '${{needs.build.outputs.linux-x64-sha-noruntime}}')
           releaseNote = releaseNote.replace(/<LINUX_ARM_SHA_NORUNTIME>/g, '${{needs.build.outputs.linux-arm-sha-noruntime}}')
           releaseNote = releaseNote.replace(/<LINUX_ARM64_SHA_NORUNTIME>/g, '${{needs.build.outputs.linux-arm64-sha-noruntime}}')
           releaseNote = releaseNote.replace(/<WIN_X64_SHA_NORUNTIME_NOEXTERNALS>/g, '${{needs.build.outputs.win-x64-sha-noruntime-noexternals}}')
           releaseNote = releaseNote.replace(/<OSX_X64_SHA_NORUNTIME_NOEXTERNALS>/g, '${{needs.build.outputs.osx-x64-sha-noruntime-noexternals}}')
+          releaseNote = releaseNote.replace(/<OSX_ARM64_SHA_NORUNTIME_NOEXTERNALS>/g, '${{needs.build.outputs.osx-arm64-sha-noruntime-noexternals}}')
           releaseNote = releaseNote.replace(/<LINUX_X64_SHA_NORUNTIME_NOEXTERNALS>/g, '${{needs.build.outputs.linux-x64-sha-noruntime-noexternals}}')
           releaseNote = releaseNote.replace(/<LINUX_ARM_SHA_NORUNTIME_NOEXTERNALS>/g, '${{needs.build.outputs.linux-arm-sha-noruntime-noexternals}}')
           releaseNote = releaseNote.replace(/<LINUX_ARM64_SHA_NORUNTIME_NOEXTERNALS>/g, '${{needs.build.outputs.linux-arm64-sha-noruntime-noexternals}}')
           console.log(releaseNote)
           core.setOutput('version', runnerVersion);
           core.setOutput('note', releaseNote);
+
+    - name: Validate Packages HASH
+      working-directory: _package
+      run: |
+        ls -l
+        echo "${{needs.build.outputs.win-x64-sha}}  actions-runner-win-x64-${{ steps.releaseNote.outputs.version }}.zip" | shasum -a 256 -c
+        echo "${{needs.build.outputs.osx-x64-sha}}  actions-runner-osx-x64-${{ steps.releaseNote.outputs.version }}.tar.gz" | shasum -a 256 -c
+        echo "${{needs.build.outputs.osx-arm64-sha}}  actions-runner-osx-arm64-${{ steps.releaseNote.outputs.version }}.tar.gz" | shasum -a 256 -c
+        echo "${{needs.build.outputs.linux-x64-sha}}  actions-runner-linux-x64-${{ steps.releaseNote.outputs.version }}.tar.gz" | shasum -a 256 -c
+        echo "${{needs.build.outputs.linux-arm-sha}}  actions-runner-linux-arm-${{ steps.releaseNote.outputs.version }}.tar.gz" | shasum -a 256 -c
+        echo "${{needs.build.outputs.linux-arm64-sha}}  actions-runner-linux-arm64-${{ steps.releaseNote.outputs.version }}.tar.gz" | shasum -a 256 -c
+
     # Create GitHub release
     - uses: actions/create-release@master
       id: createRelease
@@ -303,6 +320,16 @@ jobs:
         asset_name: actions-runner-osx-x64-${{ steps.releaseNote.outputs.version }}.tar.gz
         asset_content_type: application/octet-stream
 
+    - name: Upload Release Asset (osx-arm64)
+      uses: actions/upload-release-asset@v1.0.1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        upload_url: ${{ steps.createRelease.outputs.upload_url }}
+        asset_path: ${{ github.workspace }}/_package/actions-runner-osx-arm64-${{ steps.releaseNote.outputs.version }}.tar.gz
+        asset_name: actions-runner-osx-arm64-${{ steps.releaseNote.outputs.version }}.tar.gz
+        asset_content_type: application/octet-stream
+
     - name: Upload Release Asset (linux-arm)
       uses: actions/upload-release-asset@v1.0.1
       env:
@@ -354,6 +381,16 @@ jobs:
         asset_name: actions-runner-osx-x64-${{ steps.releaseNote.outputs.version }}-noexternals.tar.gz
         asset_content_type: application/octet-stream
 
+    - name: Upload Release Asset (osx-arm64-noexternals)
+      uses: actions/upload-release-asset@v1.0.1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        upload_url: ${{ steps.createRelease.outputs.upload_url }}
+        asset_path: ${{ github.workspace }}/_package_trims/trim_externals/actions-runner-osx-arm64-${{ steps.releaseNote.outputs.version }}-noexternals.tar.gz
+        asset_name: actions-runner-osx-arm64-${{ steps.releaseNote.outputs.version }}-noexternals.tar.gz
+        asset_content_type: application/octet-stream
+
     - name: Upload Release Asset (linux-arm-noexternals)
       uses: actions/upload-release-asset@v1.0.1
       env:
@@ -405,6 +442,16 @@ jobs:
         asset_name: actions-runner-osx-x64-${{ steps.releaseNote.outputs.version }}-noruntime.tar.gz
         asset_content_type: application/octet-stream
 
+    - name: Upload Release Asset (osx-arm64-noruntime)
+      uses: actions/upload-release-asset@v1.0.1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        upload_url: ${{ steps.createRelease.outputs.upload_url }}
+        asset_path: ${{ github.workspace }}/_package_trims/trim_runtime/actions-runner-osx-arm64-${{ steps.releaseNote.outputs.version }}-noruntime.tar.gz
+        asset_name: actions-runner-osx-arm64-${{ steps.releaseNote.outputs.version }}-noruntime.tar.gz
+        asset_content_type: application/octet-stream
+
     - name: Upload Release Asset (linux-arm-noruntime)
       uses: actions/upload-release-asset@v1.0.1
       env:
@@ -456,6 +503,16 @@ jobs:
         asset_name: actions-runner-osx-x64-${{ steps.releaseNote.outputs.version }}-noruntime-noexternals.tar.gz
         asset_content_type: application/octet-stream
 
+    - name: Upload Release Asset (osx-arm64-noruntime-noexternals)
+      uses: actions/upload-release-asset@v1.0.1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        upload_url: ${{ steps.createRelease.outputs.upload_url }}
+        asset_path: ${{ github.workspace }}/_package_trims/trim_runtime_externals/actions-runner-osx-arm64-${{ steps.releaseNote.outputs.version }}-noruntime-noexternals.tar.gz
+        asset_name: actions-runner-osx-arm64-${{ steps.releaseNote.outputs.version }}-noruntime-noexternals.tar.gz
+        asset_content_type: application/octet-stream
+
     - name: Upload Release Asset (linux-arm-noruntime-noexternals)
       uses: actions/upload-release-asset@v1.0.1
       env:
@@ -507,6 +564,16 @@ jobs:
         asset_name: actions-runner-osx-x64-${{ steps.releaseNote.outputs.version }}-trimmedpackages.json
         asset_content_type: application/octet-stream
 
+    - name: Upload Release Asset (osx-arm64-trimmedpackages.json)
+      uses: actions/upload-release-asset@v1.0.1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        upload_url: ${{ steps.createRelease.outputs.upload_url }}
+        asset_path: ${{ github.workspace }}/osx-arm64-trimmedpackages.json
+        asset_name: actions-runner-osx-arm64-${{ steps.releaseNote.outputs.version }}-trimmedpackages.json
+        asset_content_type: application/octet-stream
+
     - name: Upload Release Asset (linux-arm-trimmedpackages.json)
       uses: actions/upload-release-asset@v1.0.1
       env:

.vscode/launch.json

@@ -12,8 +12,7 @@
             ],
             "cwd": "${workspaceFolder}/src",
             "console": "integratedTerminal",
-            "requireExactSource": false,
-            "targetArchitecture": "x86_64"
+            "requireExactSource": false
         },
         {
             "name": "Run",
@@ -25,8 +24,7 @@
             ],
             "cwd": "${workspaceFolder}/src",
             "console": "integratedTerminal",
-            "requireExactSource": false,
-            "targetArchitecture": "x86_64"
+            "requireExactSource": false
         },
         {
             "name": "Configure",
@@ -39,24 +37,21 @@
             ],
             "cwd": "${workspaceFolder}/src",
             "console": "integratedTerminal",
-            "requireExactSource": false,
-            "targetArchitecture": "x86_64"
+            "requireExactSource": false
         },
         {
             "name": "Debug Worker",
             "type": "coreclr",
             "request": "attach",
             "processName": "Runner.Worker",
-            "requireExactSource": false,
-            "targetArchitecture": "x86_64"
+            "requireExactSource": false
         },
         {
             "name": "Attach Debugger",
             "type": "coreclr",
             "request": "attach",
             "processId": "${command:pickProcess}",
-            "requireExactSource": false,
-            "targetArchitecture": "x86_64"
+            "requireExactSource": false
         },
     ],
 }

docs/adrs/1751-runner-job-hooks.md

@@ -0,0 +1,83 @@
+# ADR: Notification Hooks for Runners
+
+## Context
+
+This ADR details the design changes for supporting custom configurable hooks for on various runner events. This has been a long requested user feature [here](https://github.com/actions/runner/issues/1543), [here](https://github.com/actions/runner/issues/699) and [here](https://github.com/actions/runner/issues/1116) for users to have more information on runner observability, and for the ability to run cleanup and teardown jobs. 
+
+This feature is mainly intended for self hosted runner administrators.
+
+**What we hope to solve with this feature**
+1. A runner admininstrator is able to add custom scripts to cleanup their runner environment at the start or end of a job
+2. A runner admininstrator is able to add custom scripts to help setup their runner environment at the beginning of a job, for reasons like [caching](https://github.com/actions/runner/issues/1543#issuecomment-1050346279)
+3. A runner administrator is able to grab custom telemetry of jobs running on their self hosted runner
+
+**What we don't think this will solve**
+- Policy features that require certain steps run at the beginning or end of all jobs
+  - This would be better solved to in a central place in settings, rather then decentralized on each runner. 
+  - The Proposed `Notification Hooks for Runners` is limited to self hosted runners, we don't beileve Policy features should be
+- Reuse scenarios between jobs are covered by [composite actions](https://docs.github.com/en/actions/creating-actions/creating-a-composite-action) and [resuable workflows](https://docs.github.com/en/actions/using-workflows/reusing-workflows)
+- Security applications, security should be handled on the policy side on the server, not decentralized on each runner
+
+## Hooks
+- We will expose 2 variables that users can set to enable hooks  
+  - `ACTIONS_RUNNER_HOOK_JOB_STARTED`
+  - `ACTIONS_RUNNER_HOOK_JOB_COMPLETED`
+
+You can set these variables to the **absolute** path of a a `.sh` or `.ps1` file.
+
+We will execute `pwsh` (fallback to `powershell`) or `bash` (fallback to `sh`) as appropriate.
+- `.sh` files will execute with the args `-e {pathtofile}`
+- `.ps1` files will execute with the args `-command \". '{pathtofile}'\"`
+
+We will **not** set the [standard flags we typically set](https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idstepsshell) for `runs` commands. So, if you want to set `pipefail` on `bash` for example, you will need to do that in your script.
+
+### UI
+We want to ensure the experience for users invoking workflows is good, if hooks take too long, you may feel your job is delayed or broken. So, much like `Set Up Job`, we will generate two new steps automatically in your job, one for each configured hook: 
+- `Set up runner`  
+- `Complete runner` 
+
+These steps will contain all of the output from invoking your hook, so you will have visibility into the runtime. We will also provide information on the path to the hook, and what shell we are invoking it as, much like we do for `run: ` steps.
+
+### Contexts
+When running your hooks, some context on your job may be helpful.
+- The scripts will have access to the standard [default environment variables](https://docs.github.com/en/actions/learn-github-actions/environment-variables#default-environment-variables)
+  - Some of these variables are step specific like `GITHUB_ACTION`, in which case they will not be set
+- You can pull the full webhook event payload from `GITHUB_EVENT_PATH`
+
+### Commands
+Should we expose [Commands](https://docs.github.com/en/actions/using-workflows/workflow-commands-for-github-actions) and [Environment Files](https://docs.github.com/en/actions/using-workflows/workflow-commands-for-github-actions#environment-files)
+
+**Yes**. Imagine a scenario where a runner administrator is deprecating a runner pool, and they need to [warn users](https://docs.github.com/en/actions/using-workflows/workflow-commands-for-github-actions#setting-a-warning-message) to swap to a different pool, we should support them in doing this. However, there are some limitations:
+- [save-state](https://docs.github.com/en/actions/using-workflows/workflow-commands-for-github-actions#sending-values-to-the-pre-and-post-actions) will **not** be supported, these are not traditional steps with pre and post actions
+- [set-output](https://docs.github.com/en/actions/using-workflows/workflow-commands-for-github-actions#using-workflow-commands-to-access-toolkit-functions) will **not** be supported, there is no `id` as this is not a traditional step
+
+
+### Environment Files
+We will also enable [Environment Files](https://docs.github.com/en/actions/using-workflows/workflow-commands-for-github-actions#environment-files) to support setup scenarios for the runner environment.
+
+While a self hosted runner admin can [set env variables](https://docs.github.com/en/actions/hosting-your-own-runners/using-a-proxy-server-with-self-hosted-runners#using-a-env-file-to-set-the-proxy-configuration), these apply to all jobs. By enabling the ability to `add a path` and `set an env` we give runner admins the ability to do this dynamically based on the [workflows environment variables](https://docs.github.com/en/actions/learn-github-actions/environment-variables#default-environment-variables) to empower setup scenarios.
+
+
+### Exit codes
+These are **synchronous** hooks, so they will block job execution while they are being run. Exit code 0 will indicate a successful run of the hook and we will proceed with the job, any other exit code will fail the job with an appropriate annotation.
+- There will be no support for `continue-on-error`
+
+## Key Decisions
+- We will expose 2 variables that users can set to enable hooks  
+  - `ACTIONS_RUNNER_HOOK_JOB_STARTED`
+  - `ACTIONS_RUNNER_HOOK_JOB_COMPLETED`
+- Users can set these variables to the path of a `.sh` or `.ps1` file, which we will execute when Jobs are started or completed.
+  - Output from these will be added to a new step at the start/end of a job named `Set up runner` or `Complete runner`. 
+    - These steps will only be generated on runs with these hooks
+- These hooks `always()` execute if the env variable is set
+- These files will execute as the Runner user, outside of any container specification on the job
+- These are **synchronous** hooks
+  - Runner admins can execute a background process for async hooks if they want
+  - We will fail the job and halt execution on any exit code that is not 0. The Runner admin is responsible for returning the correct exit code and ensuring resilency. 
+    - This includes that the runner user needs access to the file in the env and the file must exist
+    - There will be no `continue-on-error` type option on launch
+    - There will be no `timeout` option on launch
+
+## Consequences
+- Runner admins have the ability to tie into the runner job execution to publish their own telemetry or perform their own cleanup or setup
+- New steps will be added to the UI showcasing the output of these hooks

docs/adrs/1891-container-hooks.md

@@ -0,0 +1,596 @@
+# ADR 0000: Container Hooks
+
+**Date**: 2022-05-12
+
+**Status**: Accepted
+
+# Background
+
+[Job Hooks](https://github.com/actions/runner/blob/main/docs/adrs/1751-runner-job-hooks.md) have given users the ability to customize how their self hosted runners run a job.
+Users also want the ability to customize how they run containers during the scope of the job, rather then being locked into the docker implementation we have in the runner. They may want to use podman, kubernetes, or even change the docker commands we run. 
+We should give them that option, and publish examples how how they can create their own hooks.
+
+# Guiding Principles
+- **Extensibility** is the focus, we need to make sure we are flexible enough to cover current and future scenarios, even at the cost of making it harder to utilize these hooks
+- Args should map **directly** to yaml values provided by the user. 
+  - For example, the current runner overrides `HOME`, we can do that in the hook, but we shouldn't pass that hook as an ENV with the other env's the user has set, as that is not user input, it is how the runner invokes containers
+
+## Interface
+- You will set the variable `ACTIONS_RUNNER_CONTAINER_HOOK=/Users/foo/runner/hooks.js` which is the entrypoint to your hook handler.
+  - There is no partial opt in, you must handle every hook 
+- We will pass a command and some args via `stdin`
+- An exit code of 0 is a success, every other exit code is a failure
+- We will support the same runner commands we support in [Job Hooks](https://github.com/actions/runner/blob/main/docs/adrs/1751-runner-job-hooks.md)
+- On timeout, we will send a sigint to your process. If you fail to terminate within a reasonable amount of time, we will send a sigkill, and eventually kill the process tree.
+
+An example input looks like
+```json
+{
+  "command": "job_cleanup",
+  "responseFile": "/users/thboop/runner/_work/{guid}.json",
+  "args": {},
+  "state": 
+  {
+      "id": "82e8219701fe096a35941d869cf8d71af1d943b5d3bdd718850fb87ac3042480"
+  }
+}
+```
+
+`command` is the command we expect you to invoke
+`responseFile` is the file you need to write your output to, if the command has output
+`args` are the specific arguments the command needs
+`state` is a json blog you can pass around to maintain your state, this is covered in more details below.
+
+### Writing responses to a file
+All text written to stdout or stderr should appear in the job or step logs. With that in mind, we support a few ways to actually return data:
+1. Wrapping the json in some unique tag and processing it like we do commands
+2. Writing to a file
+
+For 1, users typically view logging information as a safe action, so we worry someone accidentialy logging unsantized information and causing unexpected or un-secure behavior. We eventually plan to move off of stdout/stderr style commands in favor of a runner cli. 
+Investing in this area doesn't make a lot of sense at this time.
+
+While writing to a file to communicate isn't the most ideal pattern, its an existing pattern in the runner and serves us well, so lets reuse it.
+
+### Output
+Your output must be correctly formatted json. An example output looks like:
+
+```
+{
+  "state": {},
+  "context"
+  {
+    "container" : 
+    {
+      "id": "82e8219701fe096a35941d869cf8d71af1d943b5d3bdd718850fb87ac3042480"
+      "network": "github_network_53269bd575974817b43f4733536b200c"
+    }
+    "services": {
+      "redis": {
+        "id": "60972d9aa486605e66b0dad4abb638dc3d9116f566579e418166eedb8abb9105",
+        "ports": {
+          "8080": "8080"
+        },
+      "network": "github_network_53269bd575974817b43f4733536b200c"
+    }
+  }
+  "alpine: true,
+}
+```
+
+`state` is a unique field any command can return. If it is not empty, we will store the state for you and pass it into all future commands. You can overwrite it by having the next hook invoked return a unique state.
+
+Other fields are dependent upon the command being run.
+
+### Versioning
+We will not version these hooks at launch. If needed, we can always major version split these hooks in the future. We will ship in Beta to allow for breaking changes for a few months.
+
+### The Job Context
+The [job context](https://docs.github.com/en/actions/learn-github-actions/contexts#example-contents-of-the-job-context) currently has a variety of fields that correspond to containers. We should consider allowing hooks to populate new fields in the job context. That is out of scope for this original release however.
+
+## Hooks
+Hooks are to be implemented at a very high level, and map to actions the runner does, rather then specific docker actions like `docker build` or `docker create`. By mapping to runner actions, we create a very extensible framework that is flexible enough to solve any user concerns in the future. By providing first party implementations, we give users easy starting points to customize specific hooks (like `docker build`) without having to write full blown solutions.
+
+The other would be to provide hooks that mirror every docker call we make, and expose more hooks to help support k8s users, with the expectation that users may have to no-op on multiple hooks if they don't correspond to our use case.
+
+Why we don't want to go that way
+- It feels clunky, users need to understand which hooks they need to implement and which they can ignore, which isn't a great UX
+- It doesn't scale well, I don't want to build a solution where we may need to add more hooks, by mapping to runner actions, updating hooks is a painful experience for users
+- Its overwhelming, its easier to tell users to build 4 hooks and track data themselves, rather then 16 hooks where the runner needs certain information and then needs to provide that information back into each hook. If we expose `Container Create`, you need to return the container you created, then we do `container run` which uses that container. If we just give you an image and say create and run this container, you don't need to store the container id in the runner, and it maps better to k8s scenarios where we don't really have container ids.
+
+### Prepare_job hook
+The `prepare_job` hook is called when a job is started. We pass in any job or service containers the job has. We expect that you:
+- Prune anything from previous jobs if needed
+- Create a network if needed
+- Pull the job and service containers
+- Start the job container
+- Start the service containers
+- Write to the response file some information we need
+  - Required: if the container is alpine, otherwise x64
+  - Optional: any context fields you want to set on the job context, otherwise they will be unavailable for users to use
+- Return 0 when the health checks have succeeded and the job/service containers are started
+
+This hook will **always** be called if you have container hooks enabled, even if no service or job containers exist in the job. This allows you to fail the job or implement a default job container if you want to and no job container has been provided.
+
+
+<details>
+<summary>Example Input</summary>
+<br>
+  
+```
+{
+  "command": "prepare_job",
+  "responseFile": "/users/thboop/runner/_work/{guid}.json",
+  "state": {},
+  "args": 
+  {
+    "jobContainer": {
+      "image": "node:14.16",
+      "workingDirectory": "/__w/thboop-test2/thboop-test2",
+      "createOptions": "--cpus 1",
+      "environmentVariables": {
+        "NODE_ENV": "development"
+      },
+      "userMountVolumes:[
+        {
+          "sourceVolumePath": "my_docker_volume",
+          "targetVolumePath": "/volume_mount",
+          "readOnly": false
+        },
+      ],
+      "mountVolumes": [
+        {
+          "sourceVolumePath": "/home/thomas/git/runner/_layout/_work",
+          "targetVolumePath": "/__w",
+          "readOnly": false
+        },
+        {
+          "sourceVolumePath": "/home/thomas/git/runner/_layout/externals",
+          "targetVolumePath": "/__e",
+          "readOnly": true
+        },
+        {
+          "sourceVolumePath": "/home/thomas/git/runner/_layout/_work/_temp",
+          "targetVolumePath": "/__w/_temp",
+          "readOnly": false
+        },
+        {
+          "sourceVolumePath": "/home/thomas/git/runner/_layout/_work/_actions",
+          "targetVolumePath": "/__w/_actions",
+          "readOnly": false
+        },
+        {
+          "sourceVolumePath": "/home/thomas/git/runner/_layout/_work/_tool",
+          "targetVolumePath": "/__w/_tool",
+          "readOnly": false
+        },
+        {
+          "sourceVolumePath": "/home/thomas/git/runner/_layout/_work/_temp/_github_home",
+          "targetVolumePath": "/github/home",
+          "readOnly": false
+        },
+        {
+          "sourceVolumePath": "/home/thomas/git/runner/_layout/_work/_temp/_github_workflow",
+          "targetVolumePath": "/github/workflow",
+          "readOnly": false
+        }
+      ],
+      "registry": {
+        "username": "foo",
+        "password": "bar",
+        "serverUrl": "https://index.docker.io/v1"
+      },
+      "portMappings": [ "8080:80/tcp", "8080:80/udp" ]
+    },
+    "services": [
+      {
+        "contextName": "redis",
+        "image": "redis",
+        "createOptions": "--cpus 1",
+        "environmentVariables": {},
+        "mountVolumes": [],
+        "portMappings": [ "8080:80/tcp", "8080:80/udp" ]
+        "registry": {
+          "username": "foo",
+          "password": "bar",
+          "serverUrl": "https://index.docker.io/v1"
+        }
+      }
+    ]
+  }
+}
+```
+
+</details>
+
+<details>
+<summary>Field Descriptions</summary>
+<br>
+
+```
+Arg Fields:
+
+jobContainer: **Optional** An Object containing information about the specified job container
+  "image": **Required** A string containing the docker image
+  "workingDirectory": **Required** A string containing the absolute path of the working directory
+  "createOptions": **Optional** The optional create options specified in the [YAML](https://docs.github.com/en/actions/using-jobs/running-jobs-in-a-container#example-running-a-job-within-a-container)
+  "environmentVariables": **Optional** A map of key value env's to set
+  "userMountVolumes: ** Optional** an array of user mount volumes set in the [YAML](https://docs.github.com/en/actions/using-jobs/running-jobs-in-a-container#example-running-a-job-within-a-container)
+    "sourceVolumePath": **Required** The source path to the volume to be mounted into the docker container
+    "targetVolumePath": **Required** The target path to the volume to be mounted into the docker container
+    "readOnly": false **Required** whether or not the mount should be read only
+  "mountVolumes": **Required** an array of mounts to mount into the container, same fields as above
+    "sourceVolumePath": **Required** The source path to the volume to be mounted into the docker container
+    "targetVolumePath": **Required** The target path to the volume to be mounted into the docker container
+    "readOnly": false **Required** whether or not the mount should be read only
+  "registry" **Optional** docker registry credentials to use when using a private container registry
+    "username": **Optional** the username
+    "password": **Optional** the password
+    "serverUrl": **Optional** the registry url
+  "portMappings": **Optional** an array of source:target ports to map into the container
+ 
+"services": an array of service containers to spin up
+  "contextName": **Required** the name of the service in the Job context
+  "image": **Required** A string containing the docker image
+  "createOptions": **Optional** The optional create options specified in the [YAML](https://docs.github.com/en/actions/using-jobs/running-jobs-in-a-container#example-running-a-job-within-a-container)
+  "environmentVariables": **Optional** A map of key value env's to set
+  "mountVolumes": **Required** an array of mounts to mount into the container, same fields as above
+    "sourceVolumePath": **Required** The source path to the volume to be mounted into the docker container
+    "targetVolumePath": **Required** The target path to the volume to be mounted into the docker container
+    "readOnly": false **Required** whether or not the mount should be read only
+  "registry" **Optional** docker registry credentials to use when using a private container registry
+    "username": **Optional** the username
+    "password": **Optional** the password
+    "serverUrl": **Optional** the registry url
+  "portMappings": **Optional** an array of source:target ports to map into the container
+```
+
+</details>
+
+<details>
+<summary>Example Output</summary>
+<br>
+
+```
+{
+  "state": 
+  {
+    "network": "github_network_53269bd575974817b43f4733536b200c",
+    "jobContainer" : "82e8219701fe096a35941d869cf8d71af1d943b5d3bdd718850fb87ac3042480",
+    "serviceContainers": 
+    {
+      "redis": "60972d9aa486605e66b0dad4abb638dc3d9116f566579e418166eedb8abb9105"
+    }
+  },
+  "context"
+  {
+    "container" : 
+    {
+      "id": "82e8219701fe096a35941d869cf8d71af1d943b5d3bdd718850fb87ac3042480"
+      "network": "github_network_53269bd575974817b43f4733536b200c"
+    }
+    "services": {
+      "redis": {
+        "id": "60972d9aa486605e66b0dad4abb638dc3d9116f566579e418166eedb8abb9105",
+        "ports": {
+          "8080": "8080"
+        },
+      "network": "github_network_53269bd575974817b43f4733536b200c"
+    }
+  }
+  "alpine: true,
+}
+```
+
+</details>
+
+
+### Cleanup Job
+The `cleanup_job` hook is called at the end of a job and expects you to:
+- Stop any running service or job containers (or the equiavalent pod)
+- Stop the network (if one exists)
+- Delete any job or service containers (or the equiavalent pod)
+- Delete the network (if one exists)
+- Cleanup anything else that was created for the run
+
+Its input looks like
+
+<details>
+<summary>Example Input</summary>
+<br>
+
+```
+  "command": "cleanup_job",
+  "responseFile": null,
+  "state":
+  {
+    "network": "github_network_53269bd575974817b43f4733536b200c",
+    "jobContainer" : "82e8219701fe096a35941d869cf8d71af1d943b5d3bdd718850fb87ac3042480",
+    "serviceContainers": 
+    {
+      "redis": "60972d9aa486605e66b0dad4abb638dc3d9116f566579e418166eedb8abb9105"
+    }
+  }
+  "args": {}
+```
+  
+</details>
+
+No args are provided.
+  
+No output is expected.
+
+
+### Run Container Step
+The `run_container_step` is called once per container action in your job and expects you to:
+- Pull or build the required container (or fail if you cannot)
+- Run the container action and return the exit code of the container
+- Stream any step logs output to stdout and stderr
+- Cleanup the container after it executes
+
+<details>
+<summary>Example Input for Image</summary>
+<br>
+
+```
+  "command": "run_container_step",
+  "responseFile": null,
+  "state":
+  {
+    "network": "github_network_53269bd575974817b43f4733536b200c",
+    "jobContainer" : "82e8219701fe096a35941d869cf8d71af1d943b5d3bdd718850fb87ac3042480",
+    "serviceContainers": 
+    {
+      "redis": "60972d9aa486605e66b0dad4abb638dc3d9116f566579e418166eedb8abb9105"
+    }
+  }
+  "args":      
+  {
+      "image": "node:14.16",
+      "dockerfile": null,
+      "entryPointArgs": ["-f", "/dev/null"],
+      "entryPoint": "tail",
+      "workingDirectory": "/__w/thboop-test2/thboop-test2",
+      "createOptions": "--cpus 1",
+      "environmentVariables": {
+        "NODE_ENV": "development"
+      },
+      "prependPath":["/foo/bar", "bar/foo"]
+      "userMountVolumes:[
+        {
+          "sourceVolumePath": "my_docker_volume",
+          "targetVolumePath": "/volume_mount",
+          "readOnly": false
+        },
+      ],
+      "mountVolumes": [
+        {
+          "sourceVolumePath": "/home/thomas/git/runner/_layout/_work",
+          "targetVolumePath": "/__w",
+          "readOnly": false
+        },
+        {
+          "sourceVolumePath": "/home/thomas/git/runner/_layout/externals",
+          "targetVolumePath": "/__e",
+          "readOnly": true
+        },
+        {
+          "sourceVolumePath": "/home/thomas/git/runner/_layout/_work/_temp",
+          "targetVolumePath": "/__w/_temp",
+          "readOnly": false
+        },
+        {
+          "sourceVolumePath": "/home/thomas/git/runner/_layout/_work/_actions",
+          "targetVolumePath": "/__w/_actions",
+          "readOnly": false
+        },
+        {
+          "sourceVolumePath": "/home/thomas/git/runner/_layout/_work/_tool",
+          "targetVolumePath": "/__w/_tool",
+          "readOnly": false
+        },
+        {
+          "sourceVolumePath": "/home/thomas/git/runner/_layout/_work/_temp/_github_home",
+          "targetVolumePath": "/github/home",
+          "readOnly": false
+        },
+        {
+          "sourceVolumePath": "/home/thomas/git/runner/_layout/_work/_temp/_github_workflow",
+          "targetVolumePath": "/github/workflow",
+          "readOnly": false
+        }
+      ],
+      "registry": null,
+      "portMappings": { "80": "801" }
+    },
+```
+  
+</details>
+
+
+<details>
+<summary>Example Input for dockerfile</summary>
+<br>
+
+```
+  "command": "run_container_step",
+  "responseFile": null,
+  "state":
+  {
+    "network": "github_network_53269bd575974817b43f4733536b200c",
+    "jobContainer" : "82e8219701fe096a35941d869cf8d71af1d943b5d3bdd718850fb87ac3042480",
+    "services": 
+    {
+      "redis": "60972d9aa486605e66b0dad4abb638dc3d9116f566579e418166eedb8abb9105"
+    }
+  }
+  "args":      
+  {
+      "image": null,
+      "dockerfile": /__w/_actions/foo/dockerfile,
+      "entryPointArgs": ["hello world"],
+      "entryPoint": "echo",
+      "workingDirectory": "/__w/thboop-test2/thboop-test2",
+      "createOptions": "--cpus 1",
+      "environmentVariables": {
+        "NODE_ENV": "development"
+      },
+      "prependPath":["/foo/bar", "bar/foo"]
+      "userMountVolumes:[
+        {
+          "sourceVolumePath": "my_docker_volume",
+          "targetVolumePath": "/volume_mount",
+          "readOnly": false
+        },
+      ],      
+      "mountVolumes": [
+        {
+          "sourceVolumePath": "my_docker_volume",
+          "targetVolumePath": "/volume_mount",
+          "readOnly": false
+        },
+        {
+          "sourceVolumePath": "/home/thomas/git/runner/_layout/_work",
+          "targetVolumePath": "/__w",
+          "readOnly": false
+        },
+        {
+          "sourceVolumePath": "/home/thomas/git/runner/_layout/externals",
+          "targetVolumePath": "/__e",
+          "readOnly": true
+        },
+        {
+          "sourceVolumePath": "/home/thomas/git/runner/_layout/_work/_temp",
+          "targetVolumePath": "/__w/_temp",
+          "readOnly": false
+        },
+        {
+          "sourceVolumePath": "/home/thomas/git/runner/_layout/_work/_actions",
+          "targetVolumePath": "/__w/_actions",
+          "readOnly": false
+        },
+        {
+          "sourceVolumePath": "/home/thomas/git/runner/_layout/_work/_tool",
+          "targetVolumePath": "/__w/_tool",
+          "readOnly": false
+        },
+        {
+          "sourceVolumePath": "/home/thomas/git/runner/_layout/_work/_temp/_github_home",
+          "targetVolumePath": "/github/home",
+          "readOnly": false
+        },
+        {
+          "sourceVolumePath": "/home/thomas/git/runner/_layout/_work/_temp/_github_workflow",
+          "targetVolumePath": "/github/workflow",
+          "readOnly": false
+        }
+      ],
+      "registry": null,
+      "portMappings": [ "8080:80/tcp", "8080:80/udp" ]
+    },
+  }
+```
+  
+</details>
+
+
+<details>
+<summary>Field Descriptions</summary>
+<br>
+
+```
+Arg Fields:
+
+
+"image": **Optional** A string containing the docker image. Otherwise a dockerfile must be provided
+"dockerfile": **Optional** A string containing the path to the dockerfile, otherwise an image must be provided
+"entryPointArgs": **Optional** A list containing the entry point args
+"entryPoint": **Optional** The container entry point to use if the default image entrypoint should be overwritten
+"workingDirectory": **Required** A string containing the absolute path of the working directory
+"createOptions": **Optional** The optional create options specified in the [YAML](https://docs.github.com/en/actions/using-jobs/running-jobs-in-a-container#example-running-a-job-within-a-container)
+"environmentVariables": **Optional** A map of key value env's to set
+"prependPath": **Optional** an array of additional paths to prepend to the $PATH variable
+"userMountVolumes: ** Optional** an array of user mount volumes set in the [YAML](https://docs.github.com/en/actions/using-jobs/running-jobs-in-a-container#example-running-a-job-within-a-container)
+  "sourceVolumePath": **Required** The source path to the volume to be mounted into the docker container
+  "targetVolumePath": **Required** The target path to the volume to be mounted into the docker container
+  "readOnly": false **Required** whether or not the mount should be read only
+"mountVolumes": **Required** an array of mounts to mount into the container, same fields as above
+  "sourceVolumePath": **Required** The source path to the volume to be mounted into the docker container
+  "targetVolumePath": **Required** The target path to the volume to be mounted into the docker container
+  "readOnly": false **Required** whether or not the mount should be read only
+"registry" **Optional** docker registry credentials to use when using a private container registry
+  "username": **Optional** the username
+  "password": **Optional** the password
+  "serverUrl": **Optional** the registry url
+"portMappings": **Optional** an array of source:target ports to map into the container
+```
+  
+</details>
+
+No output is expected
+
+Currently we build all container actions at the start of the job. By doing it during the hook, we move this to just in time building for hooks. We could expose a hook to build/pull a container action, and have those called at the start of a job, but doing so would require hook authors to track the build containers in the state, which could be painful.
+
+### Run Script Step
+The `run_script_step` expects you to:
+- Invoke the provided script inside the job container and return the exit code
+- Stream any step log output to stdout and stderr
+
+<details>
+<summary>Example Input</summary>
+<br>
+
+
+```
+  "command": "run_script_step",
+  "responseFile": null,
+  "state":
+  {
+    "network": "github_network_53269bd575974817b43f4733536b200c",
+    "jobContainer" : "82e8219701fe096a35941d869cf8d71af1d943b5d3bdd718850fb87ac3042480",
+    "serviceContainers": 
+    {
+      "redis": "60972d9aa486605e66b0dad4abb638dc3d9116f566579e418166eedb8abb9105"
+    }
+  }
+  "args": 
+  {
+    "entryPointArgs": ["-e", "/runner/temp/abc123.sh"],
+    "entryPoint": "bash",
+    "environmentVariables": {
+      "NODE_ENV": "development"
+    },
+    "prependPath": ["/foo/bar", "bar/foo"],
+    "workingDirectory": "/__w/thboop-test2/thboop-test2"
+  }
+```
+  
+</details>
+
+<details>
+<summary>Field Descriptions</summary>
+<br>
+
+```
+Arg Fields:
+
+  
+"entryPointArgs": **Optional** A list containing the entry point args
+"entryPoint": **Optional** The container entry point to use if the default image entrypoint should be overwritten
+"prependPath": **Optional** an array of additional paths to prepend to the $PATH variable
+"workingDirectory": **Required** A string containing the absolute path of the working directory
+"environmentVariables": **Optional** A map of key value env's to set
+```
+
+</details>
+
+No output is expected
+
+
+## Limitations
+- We will only support linux on launch
+- Hooks are set by the runner admin, and thus are only supported on self hosted runners 
+
+## Consequences
+- We support non docker scenarios for self hosted runners and allow customers to customize their docker invocations
+- We ship/maintain docs on docker hooks and an open source repo with examples
+- We support these hooks and add enough telemetry to be able to troubleshoot support issues as they come in.

docs/checks/actions.md

@@ -15,7 +15,7 @@ Make sure the runner has access to actions service for GitHub.com or GitHub Ente
     ```
     curl -v https://api.github.com/api/v3/zen
     curl -v https://vstoken.actions.githubusercontent.com/_apis/health
-    curl -v https://pipelines.actions.githubusercontent/_apis/health
+    curl -v https://pipelines.actions.githubusercontent.com/_apis/health
     ```
 
 - For GitHub Enterprise Server

docs/checks/git.md

@@ -20,11 +20,30 @@ The test also set environment variable `GIT_TRACE=1` and `GIT_CURL_VERBOSE=1` be
 
 ## How to fix the issue?
 
-### 1. Check the common network issue
+### 1. Check global and system git config
+
+If you are having issues connecting to the server, check your global and system git config for any unexpected authentication headers. You might be seeing an error like:
+
+```
+fatal: unable to access 'https://github.com/actions/checkout/': The requested URL returned error: 400
+```
+
+The following commands can be used to check for unexpected authentication headers:
+
+```
+$ git config --global --list | grep extraheader
+http.extraheader=AUTHORIZATION: unexpected_auth_header
+
+$ git config --system --list | grep extraheader
+```
+
+The following command can be used to remove the above value: `git config --global --unset http.extraheader`
+
+### 2. Check the common network issue
   
   > Please check the [network doc](./network.md)
 
-### 2. SSL certificate related issue
+### 3. SSL certificate related issue
 
   If you are seeing `SSL Certificate problem:` in the log, it means the `git` can't connect to the GitHub server due to SSL handshake failure.
   > Please check the [SSL cert doc](./sslcert.md)

docs/start/envlinux.md

@@ -34,7 +34,7 @@ The `installdependencies.sh` script should install all required dependencies on
 
 Debian based OS (Debian, Ubuntu, Linux Mint)
 
-- liblttng-ust0
+- liblttng-ust1 or liblttng-ust0
 - libkrb5-3
 - zlib1g
 - libssl1.1, libssl1.0.2 or libssl1.0.0

docs/start/envosx.md

@@ -5,12 +5,6 @@
 ## Supported Versions
 
   - macOS High Sierra (10.13) and later versions
-
-## Apple Silicon M1
-
-The runner is currently not supported on devices with an Apple M1 chip.  
-We are waiting for official .NET support. You can read more here about the [current state of support here](https://github.com/orgs/dotnet/projects/18#card-56812463).
-Current .NET project board about M1 support:
-https://github.com/orgs/dotnet/projects/18#card-56812463
+  - x64 and arm64 (Apple Silicon)
 
 ## [More .Net Core Prerequisites Information](https://docs.microsoft.com/en-us/dotnet/core/macos-prerequisites?tabs=netcore30)

releaseNote.md

@@ -1,32 +1,11 @@
 ## Features
-
-- Make run.sh|cmd handle update without quitting so containers using them as entrypoints don't exit on update (#1646, #1633, #1708)
-- Add support for Step Summary (#1642, #1667, #1712) 
-- Pass jobId to the actionsDownloadInfo controller (#1639)
-- updated systemd svc.sh to accept custom service file (#1612) 
-- Add ability to specify runner group when creating service (#1675)
-- Prefer node16 over node12 when running internal scripts (#1621) 
-- Sending telemetry about actions usage. (#1688) 
-- Bump node12 version to latest (#1651)
-- Add internal to node version function and use better env var name (#1715)
-- Force JS Actions Node version to 16 if FF is on unless user opted out (#1716)
-
+- Added support for a JIT runner config (#1925)
+- Added `ACTIONS_RUNNER_FORCE_ACTIONS_NODE_VERSION` env option to force actions to run on a specific node version (#1913)
 ## Bugs
-- Fix windows console runner update crash (#1670) 
-- Retry policy for methods GetTenantCredential and GetJITRunnerTokenAsync (#1691)
-- Skip DeleteAgentSession when the acess token has been revoked. (#1692)
-- Repaired hashFiles call so if error was thrown, it was returned to process invoker (#1678)
-- Runner throws null ref exception when new line after EOF is missing (#1687)
-- Lets allow up to 150 characters for services on linux/mac (#1710) 
+- Fixed a bug where container hooks passed in path as a string rather then an array of strings (#1948)
 
 ## Misc
-
-- Added examples and aligned language within docs/checks/actions.md (#1664)
-- Problem with debugging on macOS M1 (#1625) 
-- Fix typo in hashFiles.ts. (#1672) 
-- Allow mocked updates for E2E testing (#1654)
-- Move JobTelemetry and StepsTelemetry into GlobalContext. (#1680) 
-- Fix inconsistency of outputs (both canceled and cancelled are used (#1624)
+- Minor cleanup of error messages when running container hooks (#1949)
 
 ## Windows x64
 We recommend configuring the runner in a root folder of the Windows drive (e.g. "C:\actions-runner"). This will help avoid issues related to service identity folder permissions and long file path restrictions on Windows.
@@ -42,7 +21,7 @@ Add-Type -AssemblyName System.IO.Compression.FileSystem ;
 [System.IO.Compression.ZipFile]::ExtractToDirectory("$PWD\actions-runner-win-x64-<RUNNER_VERSION>.zip", "$PWD")
 ```
 
-## OSX
+## OSX x64
 
 ``` bash
 # Create a folder
@@ -53,6 +32,17 @@ curl -O -L https://github.com/actions/runner/releases/download/v<RUNNER_VERSION>
 tar xzf ./actions-runner-osx-x64-<RUNNER_VERSION>.tar.gz
 ```
 
+## [Pre-release] OSX arm64 (Apple silicon)
+
+``` bash
+# Create a folder
+mkdir actions-runner && cd actions-runner
+# Download the latest runner package
+curl -O -L https://github.com/actions/runner/releases/download/v<RUNNER_VERSION>/actions-runner-osx-arm64-<RUNNER_VERSION>.tar.gz
+# Extract the installer
+tar xzf ./actions-runner-osx-arm64-<RUNNER_VERSION>.tar.gz
+```
+
 ## Linux x64
 
 ``` bash
@@ -95,24 +85,28 @@ The SHA-256 checksums for the packages included in this build are shown below:
 
 - actions-runner-win-x64-<RUNNER_VERSION>.zip <!-- BEGIN SHA win-x64 --><WIN_X64_SHA><!-- END SHA win-x64 -->
 - actions-runner-osx-x64-<RUNNER_VERSION>.tar.gz <!-- BEGIN SHA osx-x64 --><OSX_X64_SHA><!-- END SHA osx-x64 -->
+- actions-runner-osx-arm64-<RUNNER_VERSION>.tar.gz <!-- BEGIN SHA osx-arm64 --><OSX_ARM64_SHA><!-- END SHA osx-arm64 -->
 - actions-runner-linux-x64-<RUNNER_VERSION>.tar.gz <!-- BEGIN SHA linux-x64 --><LINUX_X64_SHA><!-- END SHA linux-x64 -->
 - actions-runner-linux-arm64-<RUNNER_VERSION>.tar.gz <!-- BEGIN SHA linux-arm64 --><LINUX_ARM64_SHA><!-- END SHA linux-arm64 -->
 - actions-runner-linux-arm-<RUNNER_VERSION>.tar.gz <!-- BEGIN SHA linux-arm --><LINUX_ARM_SHA><!-- END SHA linux-arm -->
 
 - actions-runner-win-x64-<RUNNER_VERSION>-noexternals.zip <!-- BEGIN SHA win-x64_noexternals --><WIN_X64_SHA_NOEXTERNALS><!-- END SHA win-x64_noexternals -->
 - actions-runner-osx-x64-<RUNNER_VERSION>-noexternals.tar.gz <!-- BEGIN SHA osx-x64_noexternals --><OSX_X64_SHA_NOEXTERNALS><!-- END SHA osx-x64_noexternals -->
+- actions-runner-osx-arm64-<RUNNER_VERSION>-noexternals.tar.gz <!-- BEGIN SHA osx-arm64_noexternals --><OSX_ARM64_SHA_NOEXTERNALS><!-- END SHA osx-arm64_noexternals -->
 - actions-runner-linux-x64-<RUNNER_VERSION>-noexternals.tar.gz <!-- BEGIN SHA linux-x64_noexternals --><LINUX_X64_SHA_NOEXTERNALS><!-- END SHA linux-x64_noexternals -->
 - actions-runner-linux-arm64-<RUNNER_VERSION>-noexternals.tar.gz <!-- BEGIN SHA linux-arm64_noexternals --><LINUX_ARM64_SHA_NOEXTERNALS><!-- END SHA linux-arm64_noexternals -->
 - actions-runner-linux-arm-<RUNNER_VERSION>-noexternals.tar.gz <!-- BEGIN SHA linux-arm_noexternals --><LINUX_ARM_SHA_NOEXTERNALS><!-- END SHA linux-arm_noexternals -->
 
 - actions-runner-win-x64-<RUNNER_VERSION>-noruntime.zip <!-- BEGIN SHA win-x64_noruntime --><WIN_X64_SHA_NORUNTIME><!-- END SHA win-x64_noruntime -->
 - actions-runner-osx-x64-<RUNNER_VERSION>-noruntime.tar.gz <!-- BEGIN SHA osx-x64_noruntime --><OSX_X64_SHA_NORUNTIME><!-- END SHA osx-x64_noruntime -->
+- actions-runner-osx-arm64-<RUNNER_VERSION>-noruntime.tar.gz <!-- BEGIN SHA osx-arm64_noruntime --><OSX_ARM64_SHA_NORUNTIME><!-- END SHA osx-arm64_noruntime -->
 - actions-runner-linux-x64-<RUNNER_VERSION>-noruntime.tar.gz <!-- BEGIN SHA linux-x64_noruntime --><LINUX_X64_SHA_NORUNTIME><!-- END SHA linux-x64_noruntime -->
 - actions-runner-linux-arm64-<RUNNER_VERSION>-noruntime.tar.gz <!-- BEGIN SHA linux-arm64_noruntime --><LINUX_ARM64_SHA_NORUNTIME><!-- END SHA linux-arm64_noruntime -->
 - actions-runner-linux-arm-<RUNNER_VERSION>-noruntime.tar.gz <!-- BEGIN SHA linux-arm_noruntime --><LINUX_ARM_SHA_NORUNTIME><!-- END SHA linux-arm_noruntime -->
 
 - actions-runner-win-x64-<RUNNER_VERSION>-noruntime-noexternals.zip <!-- BEGIN SHA win-x64_noruntime_noexternals --><WIN_X64_SHA_NORUNTIME_NOEXTERNALS><!-- END SHA win-x64_noruntime_noexternals -->
 - actions-runner-osx-x64-<RUNNER_VERSION>-noruntime-noexternals.tar.gz <!-- BEGIN SHA osx-x64_noruntime_noexternals --><OSX_X64_SHA_NORUNTIME_NOEXTERNALS><!-- END SHA osx-x64_noruntime_noexternals -->
+- actions-runner-osx-arm64-<RUNNER_VERSION>-noruntime-noexternals.tar.gz <!-- BEGIN SHA osx-arm64_noruntime_noexternals --><OSX_ARM64_SHA_NORUNTIME_NOEXTERNALS><!-- END SHA osx-arm64_noruntime_noexternals -->
 - actions-runner-linux-x64-<RUNNER_VERSION>-noruntime-noexternals.tar.gz <!-- BEGIN SHA linux-x64_noruntime_noexternals --><LINUX_X64_SHA_NORUNTIME_NOEXTERNALS><!-- END SHA linux-x64_noruntime_noexternals -->
 - actions-runner-linux-arm64-<RUNNER_VERSION>-noruntime-noexternals.tar.gz <!-- BEGIN SHA linux-arm64_noruntime_noexternals --><LINUX_ARM64_SHA_NORUNTIME_NOEXTERNALS><!-- END SHA linux-arm64_noruntime_noexternals -->
 - actions-runner-linux-arm-<RUNNER_VERSION>-noruntime-noexternals.tar.gz <!-- BEGIN SHA linux-arm_noruntime_noexternals --><LINUX_ARM_SHA_NORUNTIME_NOEXTERNALS><!-- END SHA linux-arm_noruntime_noexternals -->

releaseVersion

@@ -1 +1 @@
-2.288.0
+<Update to ./src/runnerversion when creating release>

src/Directory.Build.props

@@ -25,9 +25,12 @@
     <DefineConstants>$(DefineConstants);X86</DefineConstants>
   </PropertyGroup>
 
-  <PropertyGroup Condition="'$(BUILD_OS)' == 'OSX'">
+  <PropertyGroup Condition="'$(BUILD_OS)' == 'OSX' AND '$(PackageRuntime)' == 'osx-x64'">
     <DefineConstants>$(DefineConstants);X64</DefineConstants>
   </PropertyGroup>
+  <PropertyGroup Condition="'$(BUILD_OS)' == 'OSX' AND '$(PackageRuntime)' == 'osx-arm64'">
+    <DefineConstants>$(DefineConstants);ARM64</DefineConstants>
+  </PropertyGroup>
 
   <PropertyGroup Condition="'$(BUILD_OS)' == 'Linux' AND ('$(PackageRuntime)' == 'linux-x64' OR '$(PackageRuntime)' == '')">
     <DefineConstants>$(DefineConstants);X64</DefineConstants>

src/Misc/contentHash/dotnetRuntime/linux-arm

@@ -1 +1 @@
-de62d296708908cfd1236e58869aebbc2bae8a8c3d629276968542626c508e37
+1d709d93e5d3c6c6c656a61aa6c1781050224788a05b0e6ecc4c3c0408bdf89c

src/Misc/contentHash/dotnetRuntime/linux-arm64

@@ -1 +1 @@
-44fcd0422dd98ed17d2c8e9057ff2260c50165f20674236a4ae7d2645a07df25
+b92a47cfeaad02255b1f7a377060651b73ae5e5db22a188dbbcb4183ab03a03d

src/Misc/contentHash/dotnetRuntime/linux-x64

@@ -1 +1 @@
-e57652cf322ee16ce3af4f9e58f80858746b9e1e60279e991a3b3d9a6baf8d79
+68a9a8ef0843a8bb74241894f6f63fd76241a82295c5337d3cc7a940a314c78e

src/Misc/contentHash/dotnetRuntime/osx-arm64

@@ -0,0 +1 @@
+02c7126ff4d63ee2a0ae390c81434c125630522aadf35903bbeebb1a99d8af99

src/Misc/contentHash/dotnetRuntime/osx-x64

@@ -1 +1 @@
-bdd247b2ff3f51095524412e2ac588e7a87af805e114d6caf2368366ee7be1ea
+c9d5a542f8d765168855a89e83ae0a8970d00869041c4f9a766651c04c72b212

src/Misc/contentHash/dotnetRuntime/win-x64

@@ -1 +1 @@
-d23a0cb9f20c0aa1cddb7a39567cd097020cdeb06a1e952940601d1a405c53b8
+d94f2fbaf210297162bc9f3add819d73682c3aa6899e321c3872412b924d5504

src/Misc/contentHash/externals/osx-arm64

@@ -0,0 +1 @@
+cc4708962a80325de0baa5ae8484e0cb9ae976ac6a4178c1c0d448b8c52bd7f7

src/Misc/expressionFunc/hashFiles/.eslintrc.json

@@ -1,6 +1,6 @@
 {
-    "plugins": ["jest", "@typescript-eslint"],
-    "extends": ["plugin:github/es6"],
+    "plugins": ["@typescript-eslint"],
+    "extends": ["plugin:github/recommended"],
     "parser": "@typescript-eslint/parser",
     "parserOptions": {
       "ecmaVersion": 9,
@@ -17,13 +17,16 @@
       "@typescript-eslint/no-require-imports": "error",
       "@typescript-eslint/array-type": "error",
       "@typescript-eslint/await-thenable": "error",
-      "@typescript-eslint/ban-ts-ignore": "error",
+      "@typescript-eslint/naming-convention": [
+        "error",
+        {
+          "selector": "default",
+          "format": ["camelCase"]
+        }
+      ],
       "camelcase": "off",
-      "@typescript-eslint/camelcase": "error",
-      "@typescript-eslint/class-name-casing": "error",
       "@typescript-eslint/explicit-function-return-type": ["error", {"allowExpressions": true}],
       "@typescript-eslint/func-call-spacing": ["error", "never"],
-      "@typescript-eslint/generic-type-naming": ["error", "^[A-Z][A-Za-z]*$"],
       "@typescript-eslint/no-array-constructor": "error",
       "@typescript-eslint/no-empty-interface": "error",
       "@typescript-eslint/no-explicit-any": "error",
@@ -33,7 +36,6 @@
       "@typescript-eslint/no-misused-new": "error",
       "@typescript-eslint/no-namespace": "error",
       "@typescript-eslint/no-non-null-assertion": "warn",
-      "@typescript-eslint/no-object-literal-type-assertion": "error",
       "@typescript-eslint/no-unnecessary-qualifier": "error",
       "@typescript-eslint/no-unnecessary-type-assertion": "error",
       "@typescript-eslint/no-useless-constructor": "error",
@@ -41,19 +43,19 @@
       "@typescript-eslint/prefer-for-of": "warn",
       "@typescript-eslint/prefer-function-type": "warn",
       "@typescript-eslint/prefer-includes": "error",
-      "@typescript-eslint/prefer-interface": "error",
       "@typescript-eslint/prefer-string-starts-ends-with": "error",
       "@typescript-eslint/promise-function-async": "error",
       "@typescript-eslint/require-array-sort-compare": "error",
       "@typescript-eslint/restrict-plus-operands": "error",
-      "semi": "off",
       "@typescript-eslint/semi": ["error", "never"],
       "@typescript-eslint/type-annotation-spacing": "error",
-      "@typescript-eslint/unbound-method": "error"
+      "@typescript-eslint/unbound-method": "error",
+      "filenames/match-regex" : "off",
+      "github/no-then" : 1, // warning
+      "semi": "off"
     },
     "env": {
       "node": true,
-      "es6": true,
-      "jest/globals": true
+      "es6": true
     }
   }

src/Misc/expressionFunc/hashFiles/package.json

@@ -25,10 +25,10 @@
   },
   "devDependencies": {
     "@types/node": "^12.7.12",
-    "@typescript-eslint/parser": "^2.8.0",
+    "@typescript-eslint/parser": "^5.15.0",
     "@zeit/ncc": "^0.20.5",
-    "eslint": "^6.8.0",
-    "eslint-plugin-github": "^2.0.0",
+    "eslint": "^8.11.0",
+    "eslint-plugin-github": "^4.3.5",
     "prettier": "^1.19.1",
     "typescript": "^3.6.4"
   }

src/Misc/expressionFunc/hashFiles/src/hashFiles.ts

@@ -1,9 +1,9 @@
-import * as glob from '@actions/glob'
 import * as crypto from 'crypto'
 import * as fs from 'fs'
+import * as glob from '@actions/glob'
+import * as path from 'path'
 import * as stream from 'stream'
 import * as util from 'util'
-import * as path from 'path'
 
 async function run(): Promise<void> {
   // arg0 -> node

src/Misc/externals.sh

@@ -140,6 +140,11 @@ if [[ "$PACKAGERUNTIME" == "osx-x64" ]]; then
     acquireExternalTool "$NODE_URL/v${NODE16_VERSION}/node-v${NODE16_VERSION}-darwin-x64.tar.gz" node16 fix_nested_dir
 fi
 
+if [[ "$PACKAGERUNTIME" == "osx-arm64" ]]; then
+    # node.js v12 doesn't support macOS on arm64.
+    acquireExternalTool "$NODE_URL/v${NODE16_VERSION}/node-v${NODE16_VERSION}-darwin-arm64.tar.gz" node16 fix_nested_dir
+fi
+
 # Download the external tools for Linux PACKAGERUNTIMEs.
 if [[ "$PACKAGERUNTIME" == "linux-x64" ]]; then
     acquireExternalTool "$NODE_URL/v${NODE12_VERSION}/node-v${NODE12_VERSION}-linux-x64.tar.gz" node12 fix_nested_dir

src/Misc/layoutbin/RunnerService.js

@@ -3,94 +3,135 @@
 // Licensed under the MIT license. See LICENSE file in the project root for full license information.
 
 var childProcess = require("child_process");
-var path = require("path")
+var path = require("path");
 
-var supported = ['linux', 'darwin']
+var supported = ["linux", "darwin"];
 
 if (supported.indexOf(process.platform) == -1) {
-    console.log('Unsupported platform: ' + process.platform);
-    console.log('Supported platforms are: ' + supported.toString());
-    process.exit(1);
+  console.log("Unsupported platform: " + process.platform);
+  console.log("Supported platforms are: " + supported.toString());
+  process.exit(1);
 }
 
 var stopping = false;
 var listener = null;
 
-var runService = function () {
-    var listenerExePath = path.join(__dirname, '../bin/Runner.Listener');
-    var interactive = process.argv[2] === "interactive";
+var exitServiceAfterNFailures = Number(
+  process.env.GITHUB_ACTIONS_SERVICE_EXIT_AFTER_N_FAILURES
+);
 
-    if (!stopping) {
-        try {
-            if (interactive) {
-                console.log('Starting Runner listener interactively');
-                listener = childProcess.spawn(listenerExePath, ['run'], { env: process.env });
-            } else {
-                console.log('Starting Runner listener with startup type: service');
-                listener = childProcess.spawn(listenerExePath, ['run', '--startuptype', 'service'], { env: process.env });
-            }
-
-            console.log(`Started listener process, pid: ${listener.pid}`);
-
-            listener.stdout.on('data', (data) => {
-                process.stdout.write(data.toString('utf8'));
-            });
-
-            listener.stderr.on('data', (data) => {
-                process.stdout.write(data.toString('utf8'));
-            });
-
-            listener.on("error", (err) => {
-                console.log(`Runner listener fail to start with error ${err.message}`);
-            });
-
-            listener.on('close', (code) => {
-                console.log(`Runner listener exited with error code ${code}`);
-
-                if (code === 0) {
-                    console.log('Runner listener exit with 0 return code, stop the service, no retry needed.');
-                    stopping = true;
-                } else if (code === 1) {
-                    console.log('Runner listener exit with terminated error, stop the service, no retry needed.');
-                    stopping = true;
-                } else if (code === 2) {
-                    console.log('Runner listener exit with retryable error, re-launch runner in 5 seconds.');
-                } else if (code === 3) {
-                    console.log('Runner listener exit because of updating, re-launch runner in 5 seconds.');
-                } else {
-                    console.log('Runner listener exit with undefined return code, re-launch runner in 5 seconds.');
-                }
-
-                if (!stopping) {
-                    setTimeout(runService, 5000);
-                }
-            });
-
-        } catch (ex) {
-            console.log(ex);
-        }
-    }
+if (exitServiceAfterNFailures <= 0) {
+  exitServiceAfterNFailures = NaN;
 }
 
+var consecutiveFailureCount = 0;
+
+var gracefulShutdown = function () {
+  console.log("Shutting down runner listener");
+  stopping = true;
+  if (listener) {
+    console.log("Sending SIGINT to runner listener to stop");
+    listener.kill("SIGINT");
+
+    console.log("Sending SIGKILL to runner listener");
+    setTimeout(() => listener.kill("SIGKILL"), 30000).unref();
+  }
+};
+
+var runService = function () {
+  var listenerExePath = path.join(__dirname, "../bin/Runner.Listener");
+  var interactive = process.argv[2] === "interactive";
+
+  if (!stopping) {
+    try {
+      if (interactive) {
+        console.log("Starting Runner listener interactively");
+        listener = childProcess.spawn(listenerExePath, ["run"], {
+          env: process.env,
+        });
+      } else {
+        console.log("Starting Runner listener with startup type: service");
+        listener = childProcess.spawn(
+          listenerExePath,
+          ["run", "--startuptype", "service"],
+          { env: process.env }
+        );
+      }
+
+      console.log(`Started listener process, pid: ${listener.pid}`);
+
+      listener.stdout.on("data", (data) => {
+        if (data.toString("utf8").includes("Listening for Jobs")) {
+          consecutiveFailureCount = 0;
+        }
+        process.stdout.write(data.toString("utf8"));
+      });
+
+      listener.stderr.on("data", (data) => {
+        process.stdout.write(data.toString("utf8"));
+      });
+
+      listener.on("error", (err) => {
+        console.log(`Runner listener fail to start with error ${err.message}`);
+      });
+
+      listener.on("close", (code) => {
+        console.log(`Runner listener exited with error code ${code}`);
+
+        if (code === 0) {
+          console.log(
+            "Runner listener exit with 0 return code, stop the service, no retry needed."
+          );
+          stopping = true;
+        } else if (code === 1) {
+          console.log(
+            "Runner listener exit with terminated error, stop the service, no retry needed."
+          );
+          stopping = true;
+        } else if (code === 2) {
+          console.log(
+            "Runner listener exit with retryable error, re-launch runner in 5 seconds."
+          );
+          consecutiveFailureCount = 0;
+        } else if (code === 3 || code === 4) {
+          console.log(
+            "Runner listener exit because of updating, re-launch runner in 5 seconds."
+          );
+          consecutiveFailureCount = 0;
+        } else {
+          var messagePrefix = "Runner listener exit with undefined return code";
+          consecutiveFailureCount++;
+          if (
+            !isNaN(exitServiceAfterNFailures) &&
+            consecutiveFailureCount >= exitServiceAfterNFailures
+          ) {
+            console.error(
+              `${messagePrefix}, exiting service after ${consecutiveFailureCount} consecutive failures`
+            );
+            gracefulShutdown();
+            return;
+          } else {
+            console.log(`${messagePrefix}, re-launch runner in 5 seconds.`);
+          }
+        }
+
+        if (!stopping) {
+          setTimeout(runService, 5000);
+        }
+      });
+    } catch (ex) {
+      console.log(ex);
+    }
+  }
+};
+
 runService();
-console.log('Started running service');
+console.log("Started running service");
 
-var gracefulShutdown = function (code) {
-    console.log('Shutting down runner listener');
-    stopping = true;
-    if (listener) {
-        console.log('Sending SIGINT to runner listener to stop');
-        listener.kill('SIGINT');
-
-        console.log('Sending SIGKILL to runner listener');
-        setTimeout(() => listener.kill('SIGKILL'), 30000).unref();
-    }
-}
-
-process.on('SIGINT', () => {
-    gracefulShutdown(0);
+process.on("SIGINT", () => {
+  gracefulShutdown();
 });
 
-process.on('SIGTERM', () => {
-    gracefulShutdown(0);
+process.on("SIGTERM", () => {
+  gracefulShutdown();
 });

src/Misc/layoutbin/darwin.svc.sh.template

@@ -63,7 +63,7 @@ function install()
     mkdir -p "${log_path}" || failed "failed to create ${log_path}"
 
     echo Creating ${PLIST_PATH}
-    sed "s/{{User}}/${SUDO_USER:-$USER}/g; s/{{SvcName}}/$SVC_NAME/g; s@{{RunnerRoot}}@${RUNNER_ROOT}@g; s@{{UserHome}}@$HOME@g;" "${TEMPLATE_PATH}" > "${TEMP_PATH}" || failed "failed to create replacement temp file"
+    sed "s/{{User}}/${USER:-$SUDO_USER}/g; s/{{SvcName}}/$SVC_NAME/g; s@{{RunnerRoot}}@${RUNNER_ROOT}@g; s@{{UserHome}}@$HOME@g;" "${TEMPLATE_PATH}" > "${TEMP_PATH}" || failed "failed to create replacement temp file"
     mv "${TEMP_PATH}" "${PLIST_PATH}" || failed "failed to copy plist"
 
     # Since we started with sudo, runsvc.sh will be owned by root. Change this to current login user.

src/Misc/layoutbin/hashFiles/index.js

@@ -1557,12 +1557,12 @@ var __importStar = (this && this.__importStar) || function (mod) {
     return result;
 };
 Object.defineProperty(exports, "__esModule", { value: true });
-const glob = __importStar(__webpack_require__(281));
 const crypto = __importStar(__webpack_require__(417));
 const fs = __importStar(__webpack_require__(747));
+const glob = __importStar(__webpack_require__(281));
+const path = __importStar(__webpack_require__(622));
 const stream = __importStar(__webpack_require__(413));
 const util = __importStar(__webpack_require__(669));
-const path = __importStar(__webpack_require__(622));
 function run() {
     var e_1, _a;
     return __awaiter(this, void 0, void 0, function* () {

src/Misc/layoutbin/installdependencies.sh

@@ -66,7 +66,7 @@ then
             fi
         fi
 
-        $apt_get update && $apt_get install -y liblttng-ust0 libkrb5-3 zlib1g
+        $apt_get update && $apt_get install -y libkrb5-3 zlib1g
         if [ $? -ne 0 ]
         then
             echo "'$apt_get' failed with exit code '$?'"
@@ -94,6 +94,14 @@ then
             fi
         }
 
+        apt_get_with_fallbacks liblttng-ust1 liblttng-ust0
+        if [ $? -ne 0 ]
+        then
+            echo "'$apt_get' failed with exit code '$?'"
+            print_errormessage
+            exit 1
+        fi
+
         apt_get_with_fallbacks libssl1.1$ libssl1.0.2$ libssl1.0.0$
         if [ $? -ne 0 ]
         then

src/Misc/layoutbin/update.sh.template

@@ -30,13 +30,13 @@ date "+[%F %T-%4N] Waiting for $runnerprocessname ($runnerpid) to complete" >> "
 while [ -e /proc/$runnerpid ]
 do
     date "+[%F %T-%4N] Process $runnerpid still running" >> "$logfile" 2>&1
-    sleep 2
+    "$rootfolder"/safe_sleep.sh 2
 done
 date "+[%F %T-%4N] Process $runnerpid finished running" >> "$logfile" 2>&1
 
 # start re-organize folders
 date "+[%F %T-%4N] Sleep 1 more second to make sure process exited" >> "$logfile" 2>&1
-sleep 1
+"$rootfolder"/safe_sleep.sh 1
 
 # the folder structure under runner root will be
 # ./bin -> bin.2.100.0 (junction folder)

src/Misc/layoutroot/run-helper.sh.template

@@ -10,22 +10,6 @@ fi
 # Run
 shopt -s nocasematch
 
-safe_sleep() {
-    if [ ! -x "$(command -v sleep)" ]; then
-        if [ ! -x "$(command -v ping)" ]; then
-            COUNT="0"
-            while [[ $COUNT != 5000 ]]; do
-                echo "SLEEP" > /dev/null
-                COUNT=$[$COUNT+1]
-            done
-        else
-            ping -c 5 127.0.0.1 > /dev/null
-        fi
-    else
-        sleep 5
-    fi
-}
-
 SOURCE="${BASH_SOURCE[0]}"
 while [ -h "$SOURCE" ]; do # resolve $SOURCE until the file is no longer a symlink
     DIR="$( cd -P "$( dirname "$SOURCE" )" && pwd )"
@@ -44,17 +28,17 @@ elif [[ $returnCode == 1 ]]; then
     exit 0
 elif [[ $returnCode == 2 ]]; then
     echo "Runner listener exit with retryable error, re-launch runner in 5 seconds."
-    safe_sleep
+    "$DIR"/safe_sleep.sh 5
     exit 2
 elif [[ $returnCode == 3 ]]; then
     # Sleep 5 seconds to wait for the runner update process finish
     echo "Runner listener exit because of updating, re-launch runner in 5 seconds"
-    safe_sleep
+    "$DIR"/safe_sleep.sh 5
     exit 2
 elif [[ $returnCode == 4 ]]; then
     # Sleep 5 seconds to wait for the ephemeral runner update process finish
     echo "Runner listener exit because of updating, re-launch ephemeral runner in 5 seconds"
-    safe_sleep
+    "$DIR"/safe_sleep.sh 5
     exit 2
 else
     echo "Exiting with unknown error code: ${returnCode}"

src/Misc/layoutroot/safe_sleep.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+SECONDS=0
+while [[ $SECONDS != $1 ]]; do
+    :
+done

src/Misc/runnerdotnetruntimeassets

@@ -3,6 +3,7 @@ api-ms-win-core-console-l1-2-0.dll
 api-ms-win-core-datetime-l1-1-0.dll
 api-ms-win-core-debug-l1-1-0.dll
 api-ms-win-core-errorhandling-l1-1-0.dll
+api-ms-win-core-fibers-l1-1-0.dll
 api-ms-win-core-file-l1-1-0.dll
 api-ms-win-core-file-l1-2-0.dll
 api-ms-win-core-file-l2-1-0.dll
@@ -70,7 +71,7 @@ Microsoft.VisualBasic.dll
 Microsoft.Win32.Primitives.dll
 Microsoft.Win32.Registry.dll
 mscordaccore.dll
-mscordaccore_amd64_amd64_6.0.21.52210.dll
+mscordaccore_amd64_amd64_6.0.522.21309.dll
 mscordbi.dll
 mscorlib.dll
 mscorrc.debug.dll

src/Runner.Common/Constants.cs

@@ -86,10 +86,11 @@ namespace GitHub.Runner.Common
             public static class CommandLine
             {
                 //if you are adding a new arg, please make sure you update the
-                //validArgs array as well present in the CommandSettings.cs
+                //validOptions dictionary as well present in the CommandSettings.cs
                 public static class Args
                 {
                     public static readonly string Auth = "auth";
+                    public static readonly string JitConfig = "jitconfig";
                     public static readonly string Labels = "labels";
                     public static readonly string MonitorSocketAddress = "monitorsocketaddress";
                     public static readonly string Name = "name";
@@ -121,7 +122,7 @@ namespace GitHub.Runner.Common
                 }
 
                 //if you are adding a new flag, please make sure you update the
-                //validFlags array as well present in the CommandSettings.cs
+                //validOptions dictionary as well present in the CommandSettings.cs
                 public static class Flags
                 {
                     public static readonly string Check = "check";
@@ -149,6 +150,9 @@ namespace GitHub.Runner.Common
             public static class Features
             {
                 public static readonly string DiskSpaceWarning = "runner.diskspace.warning";
+                public static readonly string Node12Warning = "DistributedTask.AddWarningToNode12Action";
+                public static readonly string UseContainerPathForTemplate = "DistributedTask.UseContainerPathForTemplate";
+                public static readonly string AllowRunnerContainerHooks = "DistributedTask.AllowRunnerContainerHooks"; 
             }
 
             public static readonly string InternalTelemetryIssueDataKey = "_internal_telemetry";
@@ -158,6 +162,7 @@ namespace GitHub.Runner.Common
             public static readonly string UnsupportedCommandMessageDisabled = "The `{0}` command is disabled. Please upgrade to using Environment Files or opt into unsecure command execution by setting the `ACTIONS_ALLOW_UNSECURE_COMMANDS` environment variable to `true`. For more information see: https://github.blog/changelog/2020-10-01-github-actions-deprecating-set-env-and-add-path-commands/";
             public static readonly string UnsupportedStopCommandTokenDisabled = "You cannot use a endToken that is an empty string, the string 'pause-logging', or another workflow command. For more information see: https://docs.github.com/actions/learn-github-actions/workflow-commands-for-github-actions#example-stopping-and-starting-workflow-commands or opt into insecure command execution by setting the `ACTIONS_ALLOW_UNSECURE_STOPCOMMAND_TOKENS` environment variable to `true`.";
             public static readonly string UnsupportedSummarySize = "$GITHUB_STEP_SUMMARY upload aborted, supports content up to a size of {0}k, got {1}k. For more information see: https://docs.github.com/actions/using-workflows/workflow-commands-for-github-actions#adding-a-markdown-summary";
+            public static readonly string Node12DetectedAfterEndOfLife = "Node.js 12 actions are deprecated. Please update the following actions to use Node.js 16: {0}";
         }
 
         public static class RunnerEvent
@@ -189,6 +194,13 @@ namespace GitHub.Runner.Common
             public static readonly string Success = "success";
         }
 
+        public static class Hooks
+        {
+            public static readonly string JobStartedStepName = "Set up runner";
+            public static readonly string JobCompletedStepName = "Complete runner";
+            public static readonly string ContainerHooksPath = "ACTIONS_RUNNER_CONTAINER_HOOKS";
+        }
+
         public static class Path
         {
             public static readonly string ActionsDirectory = "_actions";
@@ -218,6 +230,7 @@ namespace GitHub.Runner.Common
                 //
                 public static readonly string AllowUnsupportedCommands = "ACTIONS_ALLOW_UNSECURE_COMMANDS";
                 public static readonly string AllowUnsupportedStopCommandTokens = "ACTIONS_ALLOW_UNSECURE_STOPCOMMAND_TOKENS";
+                public static readonly string RequireJobContainer = "ACTIONS_RUNNER_REQUIRE_JOB_CONTAINER";
                 public static readonly string RunnerDebug = "ACTIONS_RUNNER_DEBUG";
                 public static readonly string StepDebug = "ACTIONS_STEP_DEBUG";
                 public static readonly string AllowActionsUseUnsecureNodeVersion = "ACTIONS_ALLOW_USE_UNSECURE_NODE_VERSION";
@@ -229,6 +242,7 @@ namespace GitHub.Runner.Common
 
                 // Set this env var to "node12" to downgrade the node version for internal functions (e.g hashfiles). This does NOT affect the version of node actions.
                 public static readonly string ForcedInternalNodeVersion = "ACTIONS_RUNNER_FORCED_INTERNAL_NODE_VERSION"; 
+                public static readonly string ForcedActionsNodeVersion = "ACTIONS_RUNNER_FORCE_ACTIONS_NODE_VERSION"; 
             }
 
             public static class System

src/Runner.Common/HostContext.cs

@@ -13,6 +13,7 @@ using System.Runtime.Loader;
 using System.Threading;
 using System.Threading.Tasks;
 using GitHub.DistributedTask.Logging;
+using GitHub.Runner.Common.Util;
 using GitHub.Runner.Sdk;
 
 namespace GitHub.Runner.Common
@@ -641,6 +642,31 @@ namespace GitHub.Runner.Common
             var handlerFactory = context.GetService<IHttpClientHandlerFactory>();
             return handlerFactory.CreateClientHandler(context.WebProxy);
         }
+
+        public static string GetDefaultShellForScript(this IHostContext hostContext, string path, string prependPath)
+        {
+            var trace = hostContext.GetTrace(nameof(GetDefaultShellForScript));
+            switch (Path.GetExtension(path))
+            {
+                case ".sh":
+                    // use 'sh' args but prefer bash
+                    if (WhichUtil.Which("bash", false, trace, prependPath) != null)
+                    {
+                        return "bash";
+                    }
+                    return "sh";
+                case ".ps1":
+                    if (WhichUtil.Which("pwsh", false, trace, prependPath) != null)
+                    {
+                        return "pwsh";
+                    }
+                    return "powershell";
+                case ".js":
+                    return Path.Combine(hostContext.GetDirectory(WellKnownDirectory.Externals), NodeUtil.GetInternalNodeVersion(), "bin", $"node{IOUtil.ExeExtension}") + " {0}";
+                default:
+                    throw new ArgumentException($"{path} is not a valid path to a script. Make sure it ends in '.sh', '.ps1' or '.js'.");
+            }
+        }
     }
 
     public enum ShutdownReason

src/Runner.Common/JobServer.cs

@@ -1,25 +1,32 @@
-using GitHub.DistributedTask.WebApi;
-using System;
+using System;
 using System.Collections.Generic;
 using System.IO;
+using System.Linq;
 using System.Net.Http;
+using System.Net.Http.Headers;
+using System.Net.WebSockets;
+using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
+using GitHub.DistributedTask.WebApi;
 using GitHub.Runner.Sdk;
 using GitHub.Services.Common;
 using GitHub.Services.WebApi;
+using GitHub.Services.WebApi.Utilities.Internal;
+using Newtonsoft.Json;
 
 namespace GitHub.Runner.Common
 {
     [ServiceLocator(Default = typeof(JobServer))]
-    public interface IJobServer : IRunnerService
+    public interface IJobServer : IRunnerService, IAsyncDisposable
     {
         Task ConnectAsync(VssConnection jobConnection);
 
+        void InitializeWebsocketClient(ServiceEndpoint serviceEndpoint);
+
         // logging and console
         Task<TaskLog> AppendLogContentAsync(Guid scopeIdentifier, string hubName, Guid planId, int logId, Stream uploadStream, CancellationToken cancellationToken);
-        Task AppendTimelineRecordFeedAsync(Guid scopeIdentifier, string hubName, Guid planId, Guid timelineId, Guid timelineRecordId, Guid stepId, IList<string> lines, CancellationToken cancellationToken);
-        Task AppendTimelineRecordFeedAsync(Guid scopeIdentifier, string hubName, Guid planId, Guid timelineId, Guid timelineRecordId, Guid stepId, IList<string> lines, long startLine, CancellationToken cancellationToken);
+        Task AppendTimelineRecordFeedAsync(Guid scopeIdentifier, string hubName, Guid planId, Guid timelineId, Guid timelineRecordId, Guid stepId, IList<string> lines, long? startLine, CancellationToken cancellationToken);
         Task<TaskAttachment> CreateAttachmentAsync(Guid scopeIdentifier, string hubName, Guid planId, Guid timelineId, Guid timelineRecordId, String type, String name, Stream uploadStream, CancellationToken cancellationToken);
         Task<TaskLog> CreateLogAsync(Guid scopeIdentifier, string hubName, Guid planId, TaskLog log, CancellationToken cancellationToken);
         Task<Timeline> CreateTimelineAsync(Guid scopeIdentifier, string hubName, Guid planId, Guid timelineId, CancellationToken cancellationToken);
@@ -34,6 +41,20 @@ namespace GitHub.Runner.Common
         private bool _hasConnection;
         private VssConnection _connection;
         private TaskHttpClient _taskClient;
+        private ClientWebSocket _websocketClient;
+
+        private ServiceEndpoint _serviceEndpoint;
+
+        private int totalBatchedLinesAttemptedByWebsocket = 0;
+        private int failedAttemptsToPostBatchedLinesByWebsocket = 0;
+
+
+        private static readonly TimeSpan _minDelayForWebsocketReconnect = TimeSpan.FromMilliseconds(100);
+        private static readonly TimeSpan _maxDelayForWebsocketReconnect = TimeSpan.FromMilliseconds(500);
+        private static readonly int _minWebsocketFailurePercentageAllowed = 50;
+        private static readonly int _minWebsocketBatchedLinesCountToConsider = 5;
+
+        private Task _websocketConnectTask;
 
         public async Task ConnectAsync(VssConnection jobConnection)
         {
@@ -117,6 +138,21 @@ namespace GitHub.Runner.Common
             }
         }
 
+        public void InitializeWebsocketClient(ServiceEndpoint serviceEndpoint)
+        {
+            this._serviceEndpoint = serviceEndpoint;
+            InitializeWebsocketClient(TimeSpan.Zero);
+        }
+
+        public ValueTask DisposeAsync()
+        {
+            CloseWebSocket(WebSocketCloseStatus.NormalClosure, CancellationToken.None);
+
+            GC.SuppressFinalize(this);
+
+            return ValueTask.CompletedTask;
+        }
+
         private void CheckConnection()
         {
             if (!_hasConnection)
@@ -125,6 +161,53 @@ namespace GitHub.Runner.Common
             }
         }
 
+        private void InitializeWebsocketClient(TimeSpan delay)
+        {
+            if (_serviceEndpoint.Authorization != null &&
+                _serviceEndpoint.Authorization.Parameters.TryGetValue(EndpointAuthorizationParameters.AccessToken, out var accessToken) &&
+                !string.IsNullOrEmpty(accessToken))
+            {
+                if (_serviceEndpoint.Data.TryGetValue("FeedStreamUrl", out var feedStreamUrl) && !string.IsNullOrEmpty(feedStreamUrl))
+                {
+                    // let's ensure we use the right scheme
+                    feedStreamUrl = feedStreamUrl.Replace("https://", "wss://").Replace("http://", "ws://");
+                    Trace.Info($"Creating websocket client ..." + feedStreamUrl);
+                    this._websocketClient = new ClientWebSocket();
+                    this._websocketClient.Options.SetRequestHeader("Authorization", $"Bearer {accessToken}");
+                    var userAgentValues = new List<ProductInfoHeaderValue>();
+                    userAgentValues.AddRange(UserAgentUtility.GetDefaultRestUserAgent());
+                    userAgentValues.AddRange(HostContext.UserAgents);
+                    this._websocketClient.Options.SetRequestHeader("User-Agent", string.Join(" ", userAgentValues.Select(x => x.ToString())));
+
+                    this._websocketConnectTask = ConnectWebSocketClient(feedStreamUrl, delay);
+                }
+                else
+                {
+                    Trace.Info($"No FeedStreamUrl found, so we will use Rest API calls for sending feed data");
+                }
+            }
+            else
+            {
+                Trace.Info($"No access token from the service endpoint");
+            }
+        }
+
+        private async Task ConnectWebSocketClient(string feedStreamUrl, TimeSpan delay)
+        {
+            try
+            {
+                Trace.Info($"Attempting to start websocket client with delay {delay}.");
+                await Task.Delay(delay);
+                await this._websocketClient.ConnectAsync(new Uri(feedStreamUrl), default(CancellationToken));
+                Trace.Info($"Successfully started websocket client.");
+            }
+            catch (Exception ex)
+            {
+                Trace.Info("Exception caught during websocket client connect, fallback of HTTP would be used now instead of websocket.");
+                Trace.Error(ex);
+            }
+        }
+
         //-----------------------------------------------------------------
         // Feedback: WebConsole, TimelineRecords and Logs
         //-----------------------------------------------------------------
@@ -135,16 +218,86 @@ namespace GitHub.Runner.Common
             return _taskClient.AppendLogContentAsync(scopeIdentifier, hubName, planId, logId, uploadStream, cancellationToken: cancellationToken);
         }
 
-        public Task AppendTimelineRecordFeedAsync(Guid scopeIdentifier, string hubName, Guid planId, Guid timelineId, Guid timelineRecordId, Guid stepId, IList<string> lines, CancellationToken cancellationToken)
+        public async Task AppendTimelineRecordFeedAsync(Guid scopeIdentifier, string hubName, Guid planId, Guid timelineId, Guid timelineRecordId, Guid stepId, IList<string> lines, long? startLine, CancellationToken cancellationToken)
         {
             CheckConnection();
-            return _taskClient.AppendTimelineRecordFeedAsync(scopeIdentifier, hubName, planId, timelineId, timelineRecordId, stepId, lines, cancellationToken: cancellationToken);
+            var pushedLinesViaWebsocket = false;
+            if (_websocketConnectTask != null)
+            {
+                await _websocketConnectTask;
+            }
+
+            // "_websocketClient != null" implies either: We have a successful connection OR we have to attempt sending again and then reconnect
+            // ...in other words, if websocket client is null, we will skip sending to websocket and just use rest api calls to send data
+            if (_websocketClient != null)
+            {
+                var linesWrapper = startLine.HasValue ? new TimelineRecordFeedLinesWrapper(stepId, lines, startLine.Value) : new TimelineRecordFeedLinesWrapper(stepId, lines);
+                var jsonData = StringUtil.ConvertToJson(linesWrapper);
+                try
+                {
+                    totalBatchedLinesAttemptedByWebsocket++;
+                    var jsonDataBytes = Encoding.UTF8.GetBytes(jsonData);
+                    // break the message into chunks of 1024 bytes
+                    for (var i = 0; i < jsonDataBytes.Length; i += 1 * 1024)
+                    {
+                        var lastChunk = i + (1 * 1024) >= jsonDataBytes.Length;
+                        var chunk = new ArraySegment<byte>(jsonDataBytes, i, Math.Min(1 * 1024, jsonDataBytes.Length - i));
+                        await _websocketClient.SendAsync(chunk, WebSocketMessageType.Text, endOfMessage: lastChunk, cancellationToken);
+                    }
+
+                    pushedLinesViaWebsocket = true;
+                }
+                catch (Exception ex)
+                {
+                    failedAttemptsToPostBatchedLinesByWebsocket++;
+                    Trace.Info($"Caught exception during append web console line to websocket, let's fallback to sending via non-websocket call (total calls: {totalBatchedLinesAttemptedByWebsocket}, failed calls: {failedAttemptsToPostBatchedLinesByWebsocket}, websocket state: {this._websocketClient?.State}).");
+                    Trace.Error(ex);
+                    if (totalBatchedLinesAttemptedByWebsocket > _minWebsocketBatchedLinesCountToConsider)
+                    {
+                        // let's consider failure percentage
+                        if (failedAttemptsToPostBatchedLinesByWebsocket * 100 / totalBatchedLinesAttemptedByWebsocket > _minWebsocketFailurePercentageAllowed)
+                        {
+                            Trace.Info($"Exhausted websocket allowed retries, we will not attempt websocket connection for this job to post lines again.");
+                            CloseWebSocket(WebSocketCloseStatus.InternalServerError, cancellationToken);
+
+                            // By setting it to null, we will ensure that we never try websocket path again for this job
+                            _websocketClient = null;
+                        }
+                    }
+
+                    if (_websocketClient != null)
+                    {
+                        var delay = BackoffTimerHelper.GetRandomBackoff(_minDelayForWebsocketReconnect, _maxDelayForWebsocketReconnect);
+                        Trace.Info($"Websocket is not open, let's attempt to connect back again with random backoff {delay} ms (total calls: {totalBatchedLinesAttemptedByWebsocket}, failed calls: {failedAttemptsToPostBatchedLinesByWebsocket}).");
+                        InitializeWebsocketClient(delay);
+                    }
+                }
+            }
+
+            if (!pushedLinesViaWebsocket && !cancellationToken.IsCancellationRequested)
+            {
+                if (startLine.HasValue)
+                {
+                    await _taskClient.AppendTimelineRecordFeedAsync(scopeIdentifier, hubName, planId, timelineId, timelineRecordId, stepId, lines, startLine.Value, cancellationToken: cancellationToken);
+                }
+                else
+                {
+                    await _taskClient.AppendTimelineRecordFeedAsync(scopeIdentifier, hubName, planId, timelineId, timelineRecordId, stepId, lines, cancellationToken: cancellationToken);
+                }
+            }
         }
 
-        public Task AppendTimelineRecordFeedAsync(Guid scopeIdentifier, string hubName, Guid planId, Guid timelineId, Guid timelineRecordId, Guid stepId, IList<string> lines, long startLine, CancellationToken cancellationToken)
+        private void CloseWebSocket(WebSocketCloseStatus closeStatus, CancellationToken cancellationToken)
         {
-            CheckConnection();
-            return _taskClient.AppendTimelineRecordFeedAsync(scopeIdentifier, hubName, planId, timelineId, timelineRecordId, stepId, lines, startLine, cancellationToken: cancellationToken);
+            try
+            {
+                _websocketClient?.CloseOutputAsync(closeStatus, "Closing websocket", cancellationToken);
+            }
+            catch (Exception websocketEx)
+            {
+                // In some cases this might be okay since the websocket might be open yet, so just close and don't trace exceptions
+                Trace.Info($"Failed to close websocket gracefully {websocketEx.GetType().Name}");
+            }
         }
 
         public Task<TaskAttachment> CreateAttachmentAsync(Guid scopeIdentifier, string hubName, Guid planId, Guid timelineId, Guid timelineRecordId, string type, string name, Stream uploadStream, CancellationToken cancellationToken)

src/Runner.Common/JobServerQueue.cs

@@ -89,6 +89,10 @@ namespace GitHub.Runner.Common
         {
             Trace.Entering();
 
+            var serviceEndPoint = jobRequest.Resources.Endpoints.Single(x => string.Equals(x.Name, WellKnownServiceEndpointNames.SystemVssConnection, StringComparison.OrdinalIgnoreCase));
+
+            _jobServer.InitializeWebsocketClient(serviceEndPoint);
+
             if (_queueInProcess)
             {
                 Trace.Info("No-opt, all queue process tasks are running.");
@@ -156,6 +160,9 @@ namespace GitHub.Runner.Common
             await ProcessTimelinesUpdateQueueAsync(runOnce: true);
             Trace.Info("Timeline update queue drained.");
 
+            Trace.Info($"Disposing job server ...");
+            await _jobServer.DisposeAsync();
+
             Trace.Info("All queue process tasks have been stopped, and all queues are drained.");
         }
 
@@ -292,14 +299,10 @@ namespace GitHub.Runner.Common
                         {
                             try
                             {
-                                // we will not requeue failed batch, since the web console lines are time sensitive.
-                                if (batch[0].LineNumber.HasValue)
+                                // Give at most 60s for each request. 
+                                using (var timeoutTokenSource = new CancellationTokenSource(TimeSpan.FromSeconds(60)))
                                 {
-                                    await _jobServer.AppendTimelineRecordFeedAsync(_scopeIdentifier, _hubName, _planId, _jobTimelineId, _jobTimelineRecordId, stepRecordId, batch.Select(logLine => logLine.Line).ToList(), batch[0].LineNumber.Value, default(CancellationToken));
-                                }
-                                else
-                                {
-                                    await _jobServer.AppendTimelineRecordFeedAsync(_scopeIdentifier, _hubName, _planId, _jobTimelineId, _jobTimelineRecordId, stepRecordId, batch.Select(logLine => logLine.Line).ToList(), default(CancellationToken));
+                                    await _jobServer.AppendTimelineRecordFeedAsync(_scopeIdentifier, _hubName, _planId, _jobTimelineId, _jobTimelineRecordId, stepRecordId, batch.Select(logLine => logLine.Line).ToList(), batch[0].LineNumber, timeoutTokenSource.Token);
                                 }
 
                                 if (_firstConsoleOutputs)

src/Runner.Common/RunServer.cs

@@ -0,0 +1,106 @@
+using System;
+using System.Collections.Generic;
+using System.Runtime.Serialization;
+using System.Threading;
+using System.Threading.Tasks;
+using GitHub.DistributedTask.Pipelines;
+using GitHub.DistributedTask.WebApi;
+using GitHub.Runner.Common.Util;
+using GitHub.Runner.Sdk;
+using GitHub.Services.Common;
+using GitHub.Services.WebApi;
+
+namespace GitHub.Runner.Common
+{
+    [ServiceLocator(Default = typeof(RunServer))]
+    public interface IRunServer : IRunnerService
+    {
+        Task ConnectAsync(Uri serverUrl, VssCredentials credentials);
+
+        Task<AgentJobRequestMessage> GetJobMessageAsync(string id, CancellationToken token);
+    }
+
+    public sealed class RunServer : RunnerService, IRunServer
+    {
+        private bool _hasConnection;
+        private VssConnection _connection;
+        private TaskAgentHttpClient _taskAgentClient;
+
+        public async Task ConnectAsync(Uri serverUrl, VssCredentials credentials)
+        {
+            _connection = await EstablishVssConnection(serverUrl, credentials, TimeSpan.FromSeconds(100));
+            _taskAgentClient = _connection.GetClient<TaskAgentHttpClient>();
+            _hasConnection = true;
+        }
+
+        private async Task<VssConnection> EstablishVssConnection(Uri serverUrl, VssCredentials credentials, TimeSpan timeout)
+        {
+            Trace.Info($"EstablishVssConnection");
+            Trace.Info($"Establish connection with {timeout.TotalSeconds} seconds timeout.");
+            int attemptCount = 5;
+            while (attemptCount-- > 0)
+            {
+                var connection = VssUtil.CreateConnection(serverUrl, credentials, timeout: timeout);
+                try
+                {
+                    await connection.ConnectAsync();
+                    return connection;
+                }
+                catch (Exception ex) when (attemptCount > 0)
+                {
+                    Trace.Info($"Catch exception during connect. {attemptCount} attempt left.");
+                    Trace.Error(ex);
+
+                    await HostContext.Delay(TimeSpan.FromMilliseconds(100), CancellationToken.None);
+                }
+            }
+
+            // should never reach here.
+            throw new InvalidOperationException(nameof(EstablishVssConnection));
+        }
+
+        private void CheckConnection()
+        {
+            if (!_hasConnection)
+            {
+                throw new InvalidOperationException($"SetConnection");
+            }
+        }
+
+        public Task<AgentJobRequestMessage> GetJobMessageAsync(string id, CancellationToken cancellationToken)
+        {
+            CheckConnection();
+            var jobMessage = RetryRequest<AgentJobRequestMessage>(async () =>
+                                                    {
+                                                        return await _taskAgentClient.GetJobMessageAsync(id, cancellationToken);
+                                                    }, cancellationToken);
+            return jobMessage;
+        }
+
+        private async Task<T> RetryRequest<T>(Func<Task<T>> func,
+                                              CancellationToken cancellationToken,
+                                              int maxRetryAttemptsCount = 5
+                                             )
+        {
+            var retryCount = 0;
+            while (true)
+            {
+                retryCount++;
+                cancellationToken.ThrowIfCancellationRequested();
+                try
+                {
+                    return await func();
+                }
+                // TODO: Add handling of non-retriable exceptions: https://github.com/github/actions-broker/issues/122
+                catch (Exception ex) when (retryCount < maxRetryAttemptsCount)
+                {
+                    Trace.Error("Catch exception during get full job message");
+                    Trace.Error(ex);
+                    var backOff = BackoffTimerHelper.GetRandomBackoff(TimeSpan.FromSeconds(5), TimeSpan.FromSeconds(15));
+                    Trace.Warning($"Back off {backOff.TotalSeconds} seconds before next retry. {maxRetryAttemptsCount - retryCount} attempt left.");
+                    await Task.Delay(backOff, cancellationToken);
+                }
+            }
+        }
+    }
+}

src/Runner.Common/Runner.Common.csproj

@@ -3,7 +3,7 @@
   <PropertyGroup>
     <TargetFramework>net6.0</TargetFramework>
     <OutputType>Library</OutputType>
-    <RuntimeIdentifiers>win-x64;win-x86;linux-x64;linux-arm64;linux-arm;osx-x64</RuntimeIdentifiers>
+    <RuntimeIdentifiers>win-x64;win-x86;linux-x64;linux-arm64;linux-arm;osx-x64;osx-arm64</RuntimeIdentifiers>
     <TargetLatestRuntimePatch>true</TargetLatestRuntimePatch>
     <NoWarn>NU1701;NU1603</NoWarn>
     <Version>$(Version)</Version>
@@ -16,7 +16,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.Win32.Registry" Version="4.4.0" />
-    <PackageReference Include="Newtonsoft.Json" Version="11.0.2" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="System.Security.Cryptography.ProtectedData" Version="4.4.0" />
     <PackageReference Include="System.Text.Encoding.CodePages" Version="4.4.0" />
     <PackageReference Include="System.Threading.Channels" Version="4.4.0" />

src/Runner.Common/Util/NodeUtil.cs

@@ -6,11 +6,23 @@ namespace GitHub.Runner.Common.Util
     public static class NodeUtil
     {
         private const string _defaultNodeVersion = "node16";
-        public static readonly ReadOnlyCollection<string> BuiltInNodeVersions = new(new[] {"node12", "node16"});
+
+#if OS_OSX && ARM64
+        public static readonly ReadOnlyCollection<string> BuiltInNodeVersions = new(new[] { "node16" });
+#else
+        public static readonly ReadOnlyCollection<string> BuiltInNodeVersions = new(new[] { "node12", "node16" });
+#endif
+
         public static string GetInternalNodeVersion()
         {
-            var forcedNodeVersion = Environment.GetEnvironmentVariable(Constants.Variables.Agent.ForcedInternalNodeVersion);
-            return !string.IsNullOrEmpty(forcedNodeVersion) && BuiltInNodeVersions.Contains(forcedNodeVersion) ? forcedNodeVersion : _defaultNodeVersion;
+            var forcedInternalNodeVersion = Environment.GetEnvironmentVariable(Constants.Variables.Agent.ForcedInternalNodeVersion);
+            var isForcedInternalNodeVersion = !string.IsNullOrEmpty(forcedInternalNodeVersion) && BuiltInNodeVersions.Contains(forcedInternalNodeVersion);
+
+            if (isForcedInternalNodeVersion)
+            {
+                return forcedInternalNodeVersion;
+            }
+            return _defaultNodeVersion;
         }
     }
 }

src/Runner.Listener/CommandSettings.cs

@@ -17,43 +17,58 @@ namespace GitHub.Runner.Listener
         private readonly IPromptManager _promptManager;
         private readonly Tracing _trace;
 
-        private readonly string[] validCommands =
+        // Valid flags for all commands
+        private readonly string[] genericOptions =
         {
-            Constants.Runner.CommandLine.Commands.Configure,
-            Constants.Runner.CommandLine.Commands.Remove,
-            Constants.Runner.CommandLine.Commands.Run,
-            Constants.Runner.CommandLine.Commands.Warmup,
-        };
-
-        private readonly string[] validFlags =
-        {
-            Constants.Runner.CommandLine.Flags.Check,
-            Constants.Runner.CommandLine.Flags.Commit,
-            Constants.Runner.CommandLine.Flags.DisableUpdate,
-            Constants.Runner.CommandLine.Flags.Ephemeral,
             Constants.Runner.CommandLine.Flags.Help,
-            Constants.Runner.CommandLine.Flags.Once,
-            Constants.Runner.CommandLine.Flags.Replace,
-            Constants.Runner.CommandLine.Flags.RunAsService,
-            Constants.Runner.CommandLine.Flags.Unattended,
-            Constants.Runner.CommandLine.Flags.Version
+            Constants.Runner.CommandLine.Flags.Version,
+            Constants.Runner.CommandLine.Flags.Commit,
+            Constants.Runner.CommandLine.Flags.Check
         };
 
-        private readonly string[] validArgs =
+        // Valid flags and args for specific command - key: command, value: array of valid flags and args
+        private readonly Dictionary<string, string[]> validOptions = new Dictionary<string, string[]>
         {
-            Constants.Runner.CommandLine.Args.Auth,
-            Constants.Runner.CommandLine.Args.Labels,
-            Constants.Runner.CommandLine.Args.MonitorSocketAddress,
-            Constants.Runner.CommandLine.Args.Name,
-            Constants.Runner.CommandLine.Args.PAT,
-            Constants.Runner.CommandLine.Args.RunnerGroup,
-            Constants.Runner.CommandLine.Args.StartupType,
-            Constants.Runner.CommandLine.Args.Token,
-            Constants.Runner.CommandLine.Args.Url,
-            Constants.Runner.CommandLine.Args.UserName,
-            Constants.Runner.CommandLine.Args.WindowsLogonAccount,
-            Constants.Runner.CommandLine.Args.WindowsLogonPassword,
-            Constants.Runner.CommandLine.Args.Work
+            // Valid configure flags and args
+            [Constants.Runner.CommandLine.Commands.Configure] = 
+                new string[] 
+                {
+                    Constants.Runner.CommandLine.Flags.DisableUpdate,
+                    Constants.Runner.CommandLine.Flags.Ephemeral,
+                    Constants.Runner.CommandLine.Flags.Replace,
+                    Constants.Runner.CommandLine.Flags.RunAsService,
+                    Constants.Runner.CommandLine.Flags.Unattended,
+                    Constants.Runner.CommandLine.Args.Auth,
+                    Constants.Runner.CommandLine.Args.Labels,
+                    Constants.Runner.CommandLine.Args.MonitorSocketAddress,
+                    Constants.Runner.CommandLine.Args.Name,
+                    Constants.Runner.CommandLine.Args.PAT,
+                    Constants.Runner.CommandLine.Args.RunnerGroup,
+                    Constants.Runner.CommandLine.Args.Token,
+                    Constants.Runner.CommandLine.Args.Url,
+                    Constants.Runner.CommandLine.Args.UserName,
+                    Constants.Runner.CommandLine.Args.WindowsLogonAccount,
+                    Constants.Runner.CommandLine.Args.WindowsLogonPassword,
+                    Constants.Runner.CommandLine.Args.Work
+                },
+            // Valid remove flags and args
+            [Constants.Runner.CommandLine.Commands.Remove] =
+                new string[]
+                {
+                    Constants.Runner.CommandLine.Args.Token,
+                    Constants.Runner.CommandLine.Args.PAT
+                },
+            // Valid run flags and args
+            [Constants.Runner.CommandLine.Commands.Run] =
+                new string[]
+                {
+                    Constants.Runner.CommandLine.Flags.Once,
+                    Constants.Runner.CommandLine.Args.JitConfig,
+                    Constants.Runner.CommandLine.Args.StartupType
+                },
+            // valid warmup flags and args
+            [Constants.Runner.CommandLine.Commands.Warmup] =
+                new string[] { }
         };
 
         // Commands.
@@ -126,17 +141,48 @@ namespace GitHub.Runner.Listener
             List<string> unknowns = new List<string>();
 
             // detect unknown commands
-            unknowns.AddRange(_parser.Commands.Where(x => !validCommands.Contains(x, StringComparer.OrdinalIgnoreCase)));
+            unknowns.AddRange(_parser.Commands.Where(x => !validOptions.Keys.Contains(x, StringComparer.OrdinalIgnoreCase)));
 
-            // detect unknown flags
-            unknowns.AddRange(_parser.Flags.Where(x => !validFlags.Contains(x, StringComparer.OrdinalIgnoreCase)));
-
-            // detect unknown args
-            unknowns.AddRange(_parser.Args.Keys.Where(x => !validArgs.Contains(x, StringComparer.OrdinalIgnoreCase)));
+            if (unknowns.Count == 0)
+            {
+                // detect unknown flags and args for valid commands
+                foreach (var command in _parser.Commands)
+                {
+                    if (validOptions.TryGetValue(command, out string[] options))
+                    {
+                        unknowns.AddRange(_parser.Flags.Where(x => !options.Contains(x, StringComparer.OrdinalIgnoreCase) && !genericOptions.Contains(x, StringComparer.OrdinalIgnoreCase)));
+                        unknowns.AddRange(_parser.Args.Keys.Where(x => !options.Contains(x, StringComparer.OrdinalIgnoreCase)));
+                    }
+                }
+            }
 
             return unknowns;
         }
 
+        public string GetCommandName()
+        {
+            string command = string.Empty;
+
+            if (Configure)
+            {
+                command = Constants.Runner.CommandLine.Commands.Configure;
+            }
+            else if (Remove)
+            {
+                command = Constants.Runner.CommandLine.Commands.Remove;
+            }
+            else if (Run)
+            {
+                command = Constants.Runner.CommandLine.Commands.Run;
+            }
+            else if (Warmup)
+            {
+                command = Constants.Runner.CommandLine.Commands.Warmup;
+            }
+            
+            return command;
+        }
+
         //
         // Interactive flags.
         //
@@ -168,6 +214,12 @@ namespace GitHub.Runner.Listener
                 validator: Validators.AuthSchemeValidator);
         }
 
+        public string GetJitConfig()
+        {
+            return GetArg(
+                name: Constants.Runner.CommandLine.Args.JitConfig);
+        }
+
         public string GetRunnerName()
         {
             return GetArgOrPrompt(

src/Runner.Listener/Configuration/ConfigurationManager.cs

@@ -624,9 +624,12 @@ namespace GitHub.Runner.Listener.Configuration
                     httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("basic", base64EncodingToken);
                     httpClient.DefaultRequestHeaders.UserAgent.AddRange(HostContext.UserAgents);
                     httpClient.DefaultRequestHeaders.Accept.ParseAdd("application/vnd.github.v3+json");
+                    
+                    var responseStatus = System.Net.HttpStatusCode.OK;
                     try
                     {
                         var response = await httpClient.PostAsync(githubApiUrl, new StringContent(string.Empty));
+                        responseStatus = response.StatusCode;
 
                         if (response.IsSuccessStatusCode)
                         {
@@ -634,11 +637,6 @@ namespace GitHub.Runner.Listener.Configuration
                             var jsonResponse = await response.Content.ReadAsStringAsync();
                             return StringUtil.ConvertFromJson<GitHubRunnerRegisterToken>(jsonResponse);
                         }
-                        else if(response.StatusCode == System.Net.HttpStatusCode.NotFound)
-                        {
-                            // It doesn't make sense to retry in this case, so just stop
-                            break;
-                        }
                         else
                         {
                             _term.WriteError($"Http response code: {response.StatusCode} from 'POST {githubApiUrl}'");
@@ -647,15 +645,15 @@ namespace GitHub.Runner.Listener.Configuration
                             response.EnsureSuccessStatusCode();
                         }
                     }
-                    catch(Exception ex) when (retryCount < 2)
+                    catch(Exception ex) when (retryCount < 2 && responseStatus != System.Net.HttpStatusCode.NotFound)
                     {
                         retryCount++;
                         Trace.Error($"Failed to get JIT runner token -- Atempt: {retryCount}");
                         Trace.Error(ex);
-                        Trace.Info("Retrying in 5 seconds");
                     }
                 }
                 var backOff = BackoffTimerHelper.GetRandomBackoff(TimeSpan.FromSeconds(1), TimeSpan.FromSeconds(5));
+                Trace.Info($"Retrying in {backOff.Seconds} seconds");
                 await Task.Delay(backOff);
             }
             return null;
@@ -689,9 +687,11 @@ namespace GitHub.Runner.Listener.Configuration
                         {"runner_event", runnerEvent}
                     };
 
+                    var responseStatus = System.Net.HttpStatusCode.OK;
                     try
                     {
                         var response = await httpClient.PostAsync(githubApiUrl, new StringContent(StringUtil.ConvertToJson(bodyObject), null, "application/json"));
+                        responseStatus = response.StatusCode;
 
                         if(response.IsSuccessStatusCode)
                         {
@@ -699,29 +699,23 @@ namespace GitHub.Runner.Listener.Configuration
                             var jsonResponse = await response.Content.ReadAsStringAsync();
                             return StringUtil.ConvertFromJson<GitHubAuthResult>(jsonResponse);
                         }
-                        else if(response.StatusCode == System.Net.HttpStatusCode.NotFound)
-                        {
-                            // It doesn't make sense to retry in this case, so just stop
-                            break;
-                        }
                         else
                         {
                             _term.WriteError($"Http response code: {response.StatusCode} from 'POST {githubApiUrl}'");
                             var errorResponse = await response.Content.ReadAsStringAsync();
                             _term.WriteError(errorResponse);
-                            // Something else bad happened, let's go to our retry logic
                             response.EnsureSuccessStatusCode();
                         }
                     }
-                    catch(Exception ex) when (retryCount < 2)
+                    catch(Exception ex) when (retryCount < 2 && responseStatus != System.Net.HttpStatusCode.NotFound)
                     {
                         retryCount++;
                         Trace.Error($"Failed to get tenant credentials -- Atempt: {retryCount}");
                         Trace.Error(ex);
-                        Trace.Info("Retrying in 5 seconds");
                     }
                 }
                 var backOff = BackoffTimerHelper.GetRandomBackoff(TimeSpan.FromSeconds(1), TimeSpan.FromSeconds(5));
+                Trace.Info($"Retrying in {backOff.Seconds} seconds");
                 await Task.Delay(backOff);
             }
             return null;

src/Runner.Listener/Program.cs

@@ -95,7 +95,15 @@ namespace GitHub.Runner.Listener
                 var unknownCommandlines = command.Validate();
                 if (unknownCommandlines.Count > 0)
                 {
-                    terminal.WriteError($"Unrecognized command-line input arguments: '{string.Join(", ", unknownCommandlines)}'. For usage refer to: .\\config.cmd --help or ./config.sh --help");
+                    string commandName = command.GetCommandName();
+                    if (string.IsNullOrEmpty(commandName))
+                    {
+                        terminal.WriteError($"This command does not recognize the command-line input arguments: '{string.Join(", ", unknownCommandlines)}'. For usage refer to: .\\config.cmd --help or ./config.sh --help");
+                    }
+                    else
+                    {
+                        terminal.WriteError($"Unrecognized command-line input arguments for command {commandName}: '{string.Join(", ", unknownCommandlines)}'. For usage refer to: .\\config.cmd --help or ./config.sh --help");
+                    }
                 }
 
                 // Defer to the Runner class to execute the command.

src/Runner.Listener/Runner.Listener.csproj

@@ -3,7 +3,7 @@
   <PropertyGroup>
     <TargetFramework>net6.0</TargetFramework>
     <OutputType>Exe</OutputType>
-    <RuntimeIdentifiers>win-x64;win-x86;linux-x64;linux-arm64;linux-arm;osx-x64</RuntimeIdentifiers>
+    <RuntimeIdentifiers>win-x64;win-x86;linux-x64;linux-arm64;linux-arm;osx-x64;osx-arm64</RuntimeIdentifiers>
     <TargetLatestRuntimePatch>true</TargetLatestRuntimePatch>
     <NoWarn>NU1701;NU1603</NoWarn>
     <Version>$(Version)</Version>
@@ -19,7 +19,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.Win32.Registry" Version="4.4.0" />
-    <PackageReference Include="Newtonsoft.Json" Version="11.0.2" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="System.IO.FileSystem.AccessControl" Version="4.4.0" />
     <PackageReference Include="System.Security.Cryptography.ProtectedData" Version="4.4.0" />
     <PackageReference Include="System.ServiceProcess.ServiceController" Version="4.4.0" />

src/Runner.Listener/Runner.cs

@@ -1,18 +1,20 @@
-using GitHub.DistributedTask.WebApi;
-using GitHub.Runner.Listener.Configuration;
 using System;
-using System.Threading;
-using System.Threading.Tasks;
-using GitHub.Services.WebApi;
-using Pipelines = GitHub.DistributedTask.Pipelines;
+using System.Collections.Generic;
 using System.IO;
+using System.IO.Compression;
+using System.Linq;
 using System.Reflection;
 using System.Runtime.CompilerServices;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+using GitHub.DistributedTask.WebApi;
 using GitHub.Runner.Common;
-using GitHub.Runner.Sdk;
-using System.Linq;
 using GitHub.Runner.Listener.Check;
-using System.Collections.Generic;
+using GitHub.Runner.Listener.Configuration;
+using GitHub.Runner.Sdk;
+using GitHub.Services.WebApi;
+using Pipelines = GitHub.DistributedTask.Pipelines;
 
 namespace GitHub.Runner.Listener
 {
@@ -192,6 +194,30 @@ namespace GitHub.Runner.Listener
                     return Constants.Runner.ReturnCode.Success;
                 }
 
+                var base64JitConfig = command.GetJitConfig();
+                if (!string.IsNullOrEmpty(base64JitConfig))
+                {
+                    try
+                    {
+                        var decodedJitConfig = Encoding.UTF8.GetString(Convert.FromBase64String(base64JitConfig));
+                        var jitConfig = StringUtil.ConvertFromJson<Dictionary<string, string>>(decodedJitConfig);
+                        foreach (var config in jitConfig)
+                        {
+                            var configFile = Path.Combine(HostContext.GetDirectory(WellKnownDirectory.Root), config.Key);
+                            var configContent = Encoding.UTF8.GetString(Convert.FromBase64String(config.Value));
+                            File.WriteAllText(configFile, configContent, Encoding.UTF8);
+                            File.SetAttributes(configFile, File.GetAttributes(configFile) | FileAttributes.Hidden);
+                            Trace.Info($"Save {configContent.Length} chars to '{configFile}'.");
+                        }
+                    }
+                    catch (Exception ex)
+                    {
+                        Trace.Error(ex);
+                        _term.WriteError(ex.Message);
+                        return Constants.Runner.ReturnCode.TerminatedError;
+                    }
+                }
+
                 RunnerSettings settings = configManager.LoadSettings();
 
                 var store = HostContext.GetService<IConfigurationStore>();
@@ -322,6 +348,7 @@ namespace GitHub.Runner.Listener
 
                 // Should we try to cleanup ephemeral runners
                 bool runOnceJobCompleted = false;
+                bool skipSessionDeletion = false;
                 try
                 {
                     var notification = HostContext.GetService<IJobNotification>();
@@ -457,6 +484,34 @@ namespace GitHub.Runner.Listener
                                     }
                                 }
                             }
+                            // Broker flow
+                            else if (string.Equals(message.MessageType, JobRequestMessageTypes.RunnerJobRequest, StringComparison.OrdinalIgnoreCase))
+                            {
+                                if (autoUpdateInProgress || runOnceJobReceived)
+                                {
+                                    skipMessageDeletion = true;
+                                    Trace.Info($"Skip message deletion for job request message '{message.MessageId}'.");
+                                }
+                                else
+                                {
+                                    var messageRef = StringUtil.ConvertFromJson<RunnerJobRequestRef>(message.Body);
+
+                                    // Create connection
+                                    var credMgr = HostContext.GetService<ICredentialManager>();
+                                    var creds = credMgr.LoadCredentials();
+
+                                    var runServer = HostContext.CreateService<IRunServer>();
+                                    await runServer.ConnectAsync(new Uri(settings.ServerUrl), creds);
+                                    var jobMessage = await runServer.GetJobMessageAsync(messageRef.RunnerRequestId, messageQueueLoopTokenSource.Token);
+
+                                    jobDispatcher.Run(jobMessage, runOnce);
+                                    if (runOnce)
+                                    {
+                                        Trace.Info("One time used runner received job message.");
+                                        runOnceJobReceived = true;
+                                    }
+                                }
+                            }
                             else if (string.Equals(message.MessageType, JobCancelMessage.MessageType, StringComparison.OrdinalIgnoreCase))
                             {
                                 var cancelJobMessage = JsonUtility.FromString<JobCancelMessage>(message.Body);
@@ -468,6 +523,14 @@ namespace GitHub.Runner.Listener
                                     Trace.Info($"Skip message deletion for cancellation message '{message.MessageId}'.");
                                 }
                             }
+                            else if (string.Equals(message.MessageType, Pipelines.HostedRunnerShutdownMessage.MessageType, StringComparison.OrdinalIgnoreCase))
+                            {
+                                var HostedRunnerShutdownMessage = JsonUtility.FromString<Pipelines.HostedRunnerShutdownMessage>(message.Body);
+                                skipMessageDeletion = true;
+                                skipSessionDeletion = true;
+                                Trace.Info($"Service requests the hosted runner to shutdown. Reason: '{HostedRunnerShutdownMessage.Reason}'.");
+                                return Constants.Runner.ReturnCode.Success;
+                            }
                             else
                             {
                                 Trace.Error($"Received message {message.MessageId} with unsupported message type {message.MessageType}.");
@@ -501,15 +564,18 @@ namespace GitHub.Runner.Listener
                         await jobDispatcher.ShutdownAsync();
                     }
 
-                    try
+                    if (!skipSessionDeletion)
                     {
-                        await _listener.DeleteSessionAsync();
-                    }
-                    catch (Exception ex) when (runOnce)
-                    {
-                        // ignore exception during delete session for ephemeral runner since the runner might already be deleted from the server side
-                        // and the delete session call will ends up with 401.
-                        Trace.Info($"Ignore any exception during DeleteSession for an ephemeral runner. {ex}");
+                        try
+                        {
+                            await _listener.DeleteSessionAsync();
+                        }
+                        catch (Exception ex) when (runOnce)
+                        {
+                            // ignore exception during delete session for ephemeral runner since the runner might already be deleted from the server side
+                            // and the delete session call will ends up with 401.
+                            Trace.Info($"Ignore any exception during DeleteSession for an ephemeral runner. {ex}");
+                        }
                     }
 
                     messageQueueLoopTokenSource.Dispose();
@@ -561,7 +627,7 @@ Config Options:
  --labels string        Extra labels in addition to the default: 'self-hosted,{Constants.Runner.Platform},{Constants.Runner.PlatformArchitecture}'
  --work string          Relative runner work directory (default {Constants.Path.WorkDirectory})
  --replace              Replace any existing runner with the same name (default false)
- --pat                  GitHub personal access token used for checking network connectivity when executing `.{separator}run.{ext} --check`
+ --pat                  GitHub personal access token with repo scope. Used for checking network connectivity when executing `.{separator}run.{ext} --check`
  --disableupdate        Disable self-hosted runner automatic update to the latest released version`
  --ephemeral            Configure the runner to only take one job and then let the service un-configure the runner after the job finishes (default false)");
 

src/Runner.Listener/RunnerJobRequestRef.cs

@@ -0,0 +1,13 @@
+using System.Runtime.Serialization;
+
+namespace GitHub.Runner.Listener
+{
+    [DataContract]
+    public sealed class RunnerJobRequestRef
+    {
+        [DataMember(Name = "id")]
+        public string Id { get; set; }
+        [DataMember(Name = "runner_request_id")]
+        public string RunnerRequestId { get; set; }
+    }
+}

src/Runner.PluginHost/Runner.PluginHost.csproj

@@ -3,7 +3,7 @@
   <PropertyGroup>
     <TargetFramework>net6.0</TargetFramework>
     <OutputType>Exe</OutputType>
-    <RuntimeIdentifiers>win-x64;win-x86;linux-x64;linux-arm64;linux-arm;osx-x64</RuntimeIdentifiers>
+    <RuntimeIdentifiers>win-x64;win-x86;linux-x64;linux-arm64;linux-arm;osx-x64;osx-arm64</RuntimeIdentifiers>
     <TargetLatestRuntimePatch>true</TargetLatestRuntimePatch>
     <NoWarn>NU1701;NU1603</NoWarn>
     <Version>$(Version)</Version>

src/Runner.Plugins/Runner.Plugins.csproj

@@ -3,7 +3,7 @@
   <PropertyGroup>
     <TargetFramework>net6.0</TargetFramework>
     <OutputType>Library</OutputType>
-    <RuntimeIdentifiers>win-x64;win-x86;linux-x64;linux-arm64;linux-arm;osx-x64</RuntimeIdentifiers>
+    <RuntimeIdentifiers>win-x64;win-x86;linux-x64;linux-arm64;linux-arm;osx-x64;osx-arm64</RuntimeIdentifiers>
     <TargetLatestRuntimePatch>true</TargetLatestRuntimePatch>
     <NoWarn>NU1701;NU1603</NoWarn>
     <Version>$(Version)</Version>

src/Runner.Sdk/Runner.Sdk.csproj

@@ -3,7 +3,7 @@
   <PropertyGroup>
     <TargetFramework>net6.0</TargetFramework>
     <OutputType>Library</OutputType>
-    <RuntimeIdentifiers>win-x64;win-x86;linux-x64;linux-arm64;linux-arm;osx-x64</RuntimeIdentifiers>
+    <RuntimeIdentifiers>win-x64;win-x86;linux-x64;linux-arm64;linux-arm;osx-x64;osx-arm64</RuntimeIdentifiers>
     <TargetLatestRuntimePatch>true</TargetLatestRuntimePatch>
     <NoWarn>NU1701;NU1603</NoWarn>
     <Version>$(Version)</Version>

src/Runner.Sdk/Util/IOUtil.cs

@@ -424,6 +424,12 @@ namespace GitHub.Runner.Sdk
             throw new NotSupportedException($"Unable to validate execute permissions for directory '{directory}'. Exceeded maximum iterations.");
         }
 
+        public static void CreateEmptyFile(string path)
+        {
+            Directory.CreateDirectory(Path.GetDirectoryName(path));
+            File.WriteAllText(path, null);
+        }
+
         /// <summary>
         /// Recursively enumerates a directory without following directory reparse points.
         /// </summary>

src/Runner.Sdk/Util/VssUtil.cs

@@ -57,6 +57,10 @@ namespace GitHub.Runner.Sdk
                 settings.SendTimeout = TimeSpan.FromSeconds(Math.Min(Math.Max(httpRequestTimeoutSeconds, 100), 1200));
             }
 
+            if (StringUtil.ConvertToBoolean(Environment.GetEnvironmentVariable("GITHUB_ACTIONS_RUNNER_ALLOW_REDIRECT")))
+            {
+                settings.AllowAutoRedirect = true;
+            }
 
             // Remove Invariant from the list of accepted languages.
             //

src/Runner.Sdk/Util/WhichUtil.cs

@@ -1,7 +1,6 @@
 using System;
 using System.IO;
 using System.Linq;
-using GitHub.Runner.Sdk;
 
 namespace GitHub.Runner.Sdk
 {

src/Runner.Worker/ActionManager.cs

@@ -101,38 +101,41 @@ namespace GitHub.Runner.Worker
             IEnumerable<Pipelines.ActionStep> actions = steps.OfType<Pipelines.ActionStep>();
             executionContext.Output("Prepare all required actions");
             var result = await PrepareActionsRecursiveAsync(executionContext, state, actions, depth, rootStepId);
-            if (state.ImagesToPull.Count > 0)
+            if (!FeatureManager.IsContainerHooksEnabled(executionContext.Global.Variables))
             {
-                foreach (var imageToPull in result.ImagesToPull)
+                if (state.ImagesToPull.Count > 0)
                 {
-                    Trace.Info($"{imageToPull.Value.Count} steps need to pull image '{imageToPull.Key}'");
-                    containerSetupSteps.Add(new JobExtensionRunner(runAsync: this.PullActionContainerAsync,
-                                                                   condition: $"{PipelineTemplateConstants.Success}()",
-                                                                   displayName: $"Pull {imageToPull.Key}",
-                                                                   data: new ContainerSetupInfo(imageToPull.Value, imageToPull.Key)));
+                    foreach (var imageToPull in result.ImagesToPull)
+                    {
+                        Trace.Info($"{imageToPull.Value.Count} steps need to pull image '{imageToPull.Key}'");
+                        containerSetupSteps.Add(new JobExtensionRunner(runAsync: this.PullActionContainerAsync,
+                                                                    condition: $"{PipelineTemplateConstants.Success}()",
+                                                                    displayName: $"Pull {imageToPull.Key}",
+                                                                    data: new ContainerSetupInfo(imageToPull.Value, imageToPull.Key)));
+                    }
                 }
-            }
 
-            if (result.ImagesToBuild.Count > 0)
-            {
-                foreach (var imageToBuild in result.ImagesToBuild)
+                if (result.ImagesToBuild.Count > 0)
                 {
-                    var setupInfo = result.ImagesToBuildInfo[imageToBuild.Key];
-                    Trace.Info($"{imageToBuild.Value.Count} steps need to build image from '{setupInfo.Dockerfile}'");
-                    containerSetupSteps.Add(new JobExtensionRunner(runAsync: this.BuildActionContainerAsync,
-                                                                   condition: $"{PipelineTemplateConstants.Success}()",
-                                                                   displayName: $"Build {setupInfo.ActionRepository}",
-                                                                   data: new ContainerSetupInfo(imageToBuild.Value, setupInfo.Dockerfile, setupInfo.WorkingDirectory)));
+                    foreach (var imageToBuild in result.ImagesToBuild)
+                    {
+                        var setupInfo = result.ImagesToBuildInfo[imageToBuild.Key];
+                        Trace.Info($"{imageToBuild.Value.Count} steps need to build image from '{setupInfo.Dockerfile}'");
+                        containerSetupSteps.Add(new JobExtensionRunner(runAsync: this.BuildActionContainerAsync,
+                                                                    condition: $"{PipelineTemplateConstants.Success}()",
+                                                                    displayName: $"Build {setupInfo.ActionRepository}",
+                                                                    data: new ContainerSetupInfo(imageToBuild.Value, setupInfo.Dockerfile, setupInfo.WorkingDirectory)));
+                    }
                 }
-            }
 
 #if !OS_LINUX
-            if (containerSetupSteps.Count > 0)
-            {
-                executionContext.Output("Container action is only supported on Linux, skip pull and build docker images.");
-                containerSetupSteps.Clear();
-            }
+                if (containerSetupSteps.Count > 0)
+                {
+                    executionContext.Output("Container action is only supported on Linux, skip pull and build docker images.");
+                    containerSetupSteps.Clear();
+                }
 #endif
+            }
             return new PrepareResult(containerSetupSteps, result.PreStepTracker);
         }
 

src/Runner.Worker/ActionRunner.cs

@@ -1,7 +1,6 @@
 using System;
 using System.Collections.Generic;
-using System.IO;
-using System.Text;
+using System.Linq;
 using System.Threading.Tasks;
 using GitHub.DistributedTask.ObjectTemplating;
 using GitHub.DistributedTask.ObjectTemplating.Tokens;
@@ -141,21 +140,7 @@ namespace GitHub.Runner.Worker
 
             IStepHost stepHost = HostContext.CreateService<IDefaultStepHost>();
 
-            // Makes directory for event_path data
-            var tempDirectory = HostContext.GetDirectory(WellKnownDirectory.Temp);
-            var workflowDirectory = Path.Combine(tempDirectory, "_github_workflow");
-            Directory.CreateDirectory(workflowDirectory);
-
-            var gitHubEvent = ExecutionContext.GetGitHubContext("event");
-
-            // adds the GitHub event path/file if the event exists
-            if (gitHubEvent != null)
-            {
-                var workflowFile = Path.Combine(workflowDirectory, "event.json");
-                Trace.Info($"Write event payload to {workflowFile}");
-                File.WriteAllText(workflowFile, gitHubEvent, new UTF8Encoding(false));
-                ExecutionContext.SetGitHubContext("event_path", workflowFile);
-            }
+            ExecutionContext.WriteWebhookPayload();
 
             // Set GITHUB_ACTION_REPOSITORY if this Action is from a repository
             if (Action.Reference is Pipelines.RepositoryPathReference repoPathReferenceAction &&
@@ -173,8 +158,12 @@ namespace GitHub.Runner.Worker
             // Setup container stephost for running inside the container.
             if (ExecutionContext.Global.Container != null)
             {
-                // Make sure required container is already created.
-                ArgUtil.NotNullOrEmpty(ExecutionContext.Global.Container.ContainerId, nameof(ExecutionContext.Global.Container.ContainerId));
+                // Make sure the required container is already created
+                // Container hooks do not necessarily set 'ContainerId'
+                if (!FeatureManager.IsContainerHooksEnabled(ExecutionContext.Global.Variables))
+                {
+                    ArgUtil.NotNullOrEmpty(ExecutionContext.Global.Container.ContainerId, nameof(ExecutionContext.Global.Container.ContainerId));
+                }
                 var containerStepHost = HostContext.CreateService<IContainerStepHost>();
                 containerStepHost.Container = ExecutionContext.Global.Container;
                 stepHost = containerStepHost;
@@ -186,8 +175,16 @@ namespace GitHub.Runner.Worker
 
             // Load the inputs.
             ExecutionContext.Debug("Loading inputs");
-            var templateEvaluator = ExecutionContext.ToPipelineTemplateEvaluator();
-            var inputs = templateEvaluator.EvaluateStepInputs(Action.Inputs, ExecutionContext.ExpressionValues, ExecutionContext.ExpressionFunctions);
+            Dictionary<string, string> inputs;
+            if (ExecutionContext.Global.Variables.GetBoolean(Constants.Runner.Features.UseContainerPathForTemplate) ?? false)
+            {
+                inputs = EvaluateStepInputs(stepHost);
+            }
+            else
+            {
+                var templateEvaluator = ExecutionContext.ToPipelineTemplateEvaluator();
+                inputs = templateEvaluator.EvaluateStepInputs(Action.Inputs, ExecutionContext.ExpressionValues, ExecutionContext.ExpressionFunctions);
+            }
 
             var userInputs = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
             foreach (KeyValuePair<string, string> input in inputs)
@@ -314,6 +311,15 @@ namespace GitHub.Runner.Worker
             return didFullyEvaluate;
         }
 
+        private Dictionary<String, String> EvaluateStepInputs(IStepHost stepHost)
+        {
+            DictionaryContextData expressionValues = ExecutionContext.GetExpressionValues(stepHost);
+            var templateEvaluator = ExecutionContext.ToPipelineTemplateEvaluator();
+            var inputs = templateEvaluator.EvaluateStepInputs(Action.Inputs, expressionValues, ExecutionContext.ExpressionFunctions);
+
+            return inputs;
+        }
+
         private string GenerateDisplayName(ActionStep action, DictionaryContextData contextData, IExecutionContext context, out bool didFullyEvaluate)
         {
             ArgUtil.NotNull(context, nameof(context));

src/Runner.Worker/Container/ContainerHooks/ContainerHookManager.cs

@@ -0,0 +1,279 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Threading.Tasks;
+using GitHub.DistributedTask.Pipelines.ContextData;
+using GitHub.DistributedTask.WebApi;
+using GitHub.Runner.Common;
+using GitHub.Runner.Common.Util;
+using GitHub.Runner.Sdk;
+using GitHub.Runner.Worker.Handlers;
+using GitHub.Services.WebApi;
+using Newtonsoft.Json.Linq;
+
+namespace GitHub.Runner.Worker.Container.ContainerHooks
+{
+    [ServiceLocator(Default = typeof(ContainerHookManager))]
+    public interface IContainerHookManager : IRunnerService
+    {
+        Task PrepareJobAsync(IExecutionContext context, List<ContainerInfo> containers);
+        Task RunContainerStepAsync(IExecutionContext context, ContainerInfo container, string dockerFile);
+        Task RunScriptStepAsync(IExecutionContext context, ContainerInfo container, string workingDirectory, string fileName, string arguments, IDictionary<string, string> environment, string prependPath);
+        Task CleanupJobAsync(IExecutionContext context, List<ContainerInfo> containers);
+        string GetContainerHookData();
+    }
+
+    public class ContainerHookManager : RunnerService, IContainerHookManager
+    {
+        private const string ResponseFolderName = "_runner_hook_responses";
+        private string HookScriptPath;
+
+        public override void Initialize(IHostContext hostContext)
+        {
+            base.Initialize(hostContext);
+            HookScriptPath = $"{Environment.GetEnvironmentVariable(Constants.Hooks.ContainerHooksPath)}";
+        }
+
+        public async Task PrepareJobAsync(IExecutionContext context, List<ContainerInfo> containers)
+        {
+            Trace.Entering();
+            var jobContainer = containers.Where(c => c.IsJobContainer).SingleOrDefault();
+            var serviceContainers = containers.Where(c => !c.IsJobContainer).ToList();
+
+            var input = new HookInput
+            {
+                Command = HookCommand.PrepareJob,
+                ResponseFile = GenerateResponsePath(),
+                Args = new PrepareJobArgs
+                {
+                    Container = jobContainer?.GetHookContainer(),
+                    Services = serviceContainers.Select(c => c.GetHookContainer()).ToList(),
+                }
+            };
+
+            var prependPath = GetPrependPath(context);
+            var response = await ExecuteHookScript<PrepareJobResponse>(context, input, ActionRunStage.Pre, prependPath);
+            if (jobContainer != null)
+            {
+                jobContainer.IsAlpine = response.IsAlpine.Value;
+            }
+            SaveHookState(context, response.State, input);
+            UpdateJobContext(context, jobContainer, serviceContainers, response);
+        }
+
+        public async Task RunContainerStepAsync(IExecutionContext context, ContainerInfo container, string dockerFile)
+        {
+            Trace.Entering();
+            var hookState = context.Global.ContainerHookState;
+            var containerStepArgs = new ContainerStepArgs(container);
+            if (!string.IsNullOrEmpty(dockerFile))
+            {
+                containerStepArgs.Dockerfile = dockerFile;
+                containerStepArgs.Image = null;
+            }
+            var input = new HookInput
+            {
+                Args = containerStepArgs,
+                Command = HookCommand.RunContainerStep,
+                ResponseFile = GenerateResponsePath(),
+                State = hookState
+            };
+
+            var prependPath = GetPrependPath(context);
+            var response = await ExecuteHookScript<HookResponse>(context, input, ActionRunStage.Pre, prependPath);
+            if (response == null)
+            {
+                return;
+            }
+            SaveHookState(context, response.State, input);
+        }
+
+        public async Task RunScriptStepAsync(IExecutionContext context, ContainerInfo container, string workingDirectory, string entryPoint, string entryPointArgs, IDictionary<string, string> environmentVariables, string prependPath)
+        {
+            Trace.Entering();
+            var input = new HookInput
+            {
+                Command = HookCommand.RunScriptStep,
+                ResponseFile = GenerateResponsePath(),
+                Args = new ScriptStepArgs
+                {
+                    EntryPointArgs = entryPointArgs.Split(' ').Select(arg => arg.Trim()),
+                    EntryPoint = entryPoint,
+                    EnvironmentVariables = environmentVariables,
+                    PrependPath = context.Global.PrependPath.Reverse<string>(),
+                    WorkingDirectory = workingDirectory,
+                },
+                State = context.Global.ContainerHookState
+            };
+
+            var response = await ExecuteHookScript<HookResponse>(context, input, ActionRunStage.Pre, prependPath);
+
+            if (response == null)
+            {
+                return;
+            }
+            SaveHookState(context, response.State, input);
+        }
+
+        public async Task CleanupJobAsync(IExecutionContext context, List<ContainerInfo> containers)
+        {
+            Trace.Entering();
+            var input = new HookInput
+            {
+                Command = HookCommand.CleanupJob,
+                ResponseFile = GenerateResponsePath(),
+                Args = new CleanupJobArgs(),
+                State = context.Global.ContainerHookState
+            };
+            var prependPath = GetPrependPath(context);
+            await ExecuteHookScript<HookResponse>(context, input, ActionRunStage.Pre, prependPath);
+        }
+
+        public string GetContainerHookData()
+        {
+            return JsonUtility.ToString(new { HookScriptPath });
+        }
+
+        private async Task<T> ExecuteHookScript<T>(IExecutionContext context, HookInput input, ActionRunStage stage, string prependPath) where T : HookResponse
+        {
+            try
+            {
+                ValidateHookExecutable();
+                context.StepTelemetry.ContainerHookData = GetContainerHookData();
+                var scriptDirectory = Path.GetDirectoryName(HookScriptPath);
+                var stepHost = HostContext.CreateService<IDefaultStepHost>();
+
+                Dictionary<string, string> inputs = new()
+                {
+                    ["standardInInput"] = JsonUtility.ToString(input),
+                    ["path"] = HookScriptPath,
+                    ["shell"] = HostContext.GetDefaultShellForScript(HookScriptPath, prependPath)
+                };
+                var handlerFactory = HostContext.GetService<IHandlerFactory>();
+                var handler = handlerFactory.Create(
+                                context,
+                                null,
+                                stepHost,
+                                new ScriptActionExecutionData(),
+                                inputs,
+                                environment: new Dictionary<string, string>(VarUtil.EnvironmentVariableKeyComparer),
+                                context.Global.Variables,
+                                actionDirectory: scriptDirectory,
+                                localActionContainerSetupSteps: null) as ScriptHandler;
+                handler.PrepareExecution(stage);
+
+                IOUtil.CreateEmptyFile(input.ResponseFile);
+                await handler.RunAsync(stage);
+                if (handler.ExecutionContext.Result == TaskResult.Failed)
+                {
+                    throw new Exception($"The hook script at '{HookScriptPath}' running command '{input.Command}' did not execute successfully");
+                }
+                var response = GetResponse<T>(input);
+                return response;
+            }
+            catch (Exception ex)
+            {
+                throw new Exception($"Executing the custom container implementation failed. Please contact your self hosted runner administrator.", ex);
+            }
+        }
+
+        private string GenerateResponsePath() => Path.Combine(HostContext.GetDirectory(WellKnownDirectory.Temp), ResponseFolderName, $"{Guid.NewGuid()}.json");
+
+        private static string GetPrependPath(IExecutionContext context) => string.Join(Path.PathSeparator.ToString(), context.Global.PrependPath.Reverse<string>());
+
+        private void ValidateHookExecutable()
+        {
+            if (!string.IsNullOrEmpty(HookScriptPath) && !File.Exists(HookScriptPath))
+            {
+                throw new FileNotFoundException($"File not found at '{HookScriptPath}'. Set {Constants.Hooks.ContainerHooksPath} to the path of an existing file.");
+            }
+
+            var supportedHookExtensions = new string[] { ".js", ".sh", ".ps1" };
+            if (!supportedHookExtensions.Any(extension => HookScriptPath.EndsWith(extension)))
+            {
+                throw new ArgumentOutOfRangeException($"Invalid file extension at '{HookScriptPath}'. {Constants.Hooks.ContainerHooksPath} must be a path to a file with one of the following extensions: {string.Join(", ", supportedHookExtensions)}");
+            }
+        }
+
+        private T GetResponse<T>(HookInput input) where T : HookResponse
+        {
+            if (!File.Exists(input.ResponseFile))
+            {
+                Trace.Info($"Response file for the hook script at '{HookScriptPath}' running command '{input.Command}' not found.");
+                if (input.Args.IsRequireAlpineInResponse())
+                {
+                    throw new Exception($"Response file is required but not found for the hook script at '{HookScriptPath}' running command '{input.Command}'");
+                }
+                return null;
+            }
+
+            T response = IOUtil.LoadObject<T>(input.ResponseFile);
+            Trace.Info($"Response file for the hook script at '{HookScriptPath}' running command '{input.Command}' was processed successfully");
+            IOUtil.DeleteFile(input.ResponseFile);
+            Trace.Info($"Response file for the hook script at '{HookScriptPath}' running command '{input.Command}' was deleted successfully");
+            if (response == null && input.Args.IsRequireAlpineInResponse())
+            {
+                throw new Exception($"Response file could not be read at '{HookScriptPath}' running command '{input.Command}'");
+            }
+            response?.Validate(input);
+            return response;
+        }
+
+        private void SaveHookState(IExecutionContext context, JObject hookState, HookInput input)
+        {
+            if (hookState == null)
+            {
+                Trace.Info($"No 'state' property found in response file for '{input.Command}'. Global variable for 'ContainerHookState' will not be updated.");
+                return;
+            }
+            context.Global.ContainerHookState = hookState;
+            Trace.Info($"Global variable 'ContainerHookState' updated successfully for '{input.Command}' with data found in 'state' property of the response file.");
+        }
+
+        private void UpdateJobContext(IExecutionContext context, ContainerInfo jobContainer, List<ContainerInfo> serviceContainers, PrepareJobResponse response)
+        {
+            if (response.Context == null)
+            {
+                Trace.Info($"The response file does not contain a context. The fields 'jobContext.Container' and 'jobContext.Services' will not be set.");
+                return;
+            }
+
+            var containerId = response.Context.Container?.Id;
+            if (containerId != null)
+            {
+                context.JobContext.Container["id"] = new StringContextData(containerId);
+                jobContainer.ContainerId = containerId;
+            }
+
+            var containerNetwork = response.Context.Container?.Network;
+            if (containerNetwork != null)
+            {
+                context.JobContext.Container["network"] = new StringContextData(containerNetwork);
+                jobContainer.ContainerNetwork = containerNetwork;
+            }
+
+            for (var i = 0; i < response.Context.Services.Count; i++)
+            {
+                var responseContainerInfo = response.Context.Services[i];
+                var globalContainerInfo = serviceContainers[i];
+                globalContainerInfo.ContainerId = responseContainerInfo.Id;
+                globalContainerInfo.ContainerNetwork = responseContainerInfo.Network;
+
+                var service = new DictionaryContextData()
+                {
+                    ["id"] = new StringContextData(responseContainerInfo.Id),
+                    ["ports"] = new DictionaryContextData(),
+                    ["network"] = new StringContextData(responseContainerInfo.Network)
+                };
+
+                globalContainerInfo.AddPortMappings(responseContainerInfo.Ports);
+                foreach (var portMapping in responseContainerInfo.Ports)
+                {
+                    (service["ports"] as DictionaryContextData)[portMapping.Key] = new StringContextData(portMapping.Value);
+                }
+                context.JobContext.Services[globalContainerInfo.ContainerNetworkAlias] = service;
+            }
+        }
+    }
+}

src/Runner.Worker/Container/ContainerHooks/HookInput.cs

@@ -0,0 +1,113 @@
+using System.Collections.Generic;
+using System.Runtime.Serialization;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
+using Newtonsoft.Json.Linq;
+using System.Linq;
+
+namespace GitHub.Runner.Worker.Container.ContainerHooks
+{
+    public class HookInput
+    {
+        public HookCommand Command { get; set; }
+        public string ResponseFile { get; set; }
+        public IHookArgs Args { get; set; }
+        public JObject State { get; set; }
+    }
+
+    [JsonConverter(typeof(StringEnumConverter))]
+    public enum HookCommand
+    {
+        [EnumMember(Value = "prepare_job")]
+        PrepareJob,
+        [EnumMember(Value = "cleanup_job")]
+        CleanupJob,
+        [EnumMember(Value = "run_script_step")]
+        RunScriptStep,
+        [EnumMember(Value = "run_container_step")]
+        RunContainerStep,
+    }
+    public interface IHookArgs
+    {
+        bool IsRequireAlpineInResponse();
+    }
+
+    public class PrepareJobArgs : IHookArgs
+    {
+        public HookContainer Container { get; set; }
+        public IList<HookContainer> Services { get; set; }
+        public bool IsRequireAlpineInResponse() => Container != null;
+    }
+
+    public class ScriptStepArgs : IHookArgs
+    {
+        public IEnumerable<string> EntryPointArgs { get; set; }
+        public string EntryPoint { get; set; }
+        public IDictionary<string, string> EnvironmentVariables { get; set; }
+        public IEnumerable<string> PrependPath { get; set; }
+        public string WorkingDirectory { get; set; }
+        public bool IsRequireAlpineInResponse() => false;
+    }
+
+    public class ContainerStepArgs : HookContainer, IHookArgs
+    {
+        public bool IsRequireAlpineInResponse() => false;
+        public ContainerStepArgs(ContainerInfo container) : base(container) { }
+    }
+    public class CleanupJobArgs : IHookArgs
+    {
+        public bool IsRequireAlpineInResponse() => false;
+    }
+
+    public class ContainerRegistry
+    {
+        public string Username { get; set; }
+        public string Password { get; set; }
+        public string ServerUrl { get; set; }
+    }
+
+    public class HookContainer
+    {
+        public string Image { get; set; }
+        public string Dockerfile { get; set; }
+        public IEnumerable<string> EntryPointArgs { get; set; } = new List<string>();
+        public string EntryPoint { get; set; }
+        public string WorkingDirectory { get; set; }
+        public string CreateOptions { get; private set; }
+        public ContainerRegistry Registry { get; set; }
+        public IDictionary<string, string> EnvironmentVariables { get; set; } = new Dictionary<string, string>();
+        public IEnumerable<string> PortMappings { get; set; } = new List<string>();
+        public IEnumerable<MountVolume> SystemMountVolumes { get; set; } = new List<MountVolume>();
+        public IEnumerable<MountVolume> UserMountVolumes { get; set; } = new List<MountVolume>();
+        public HookContainer() { } // For Json deserializer
+        public HookContainer(ContainerInfo container)
+        {
+            Image = container.ContainerImage;
+            EntryPointArgs = container.ContainerEntryPointArgs?.Split(' ').Select(arg => arg.Trim()) ?? new List<string>();
+            EntryPoint = container.ContainerEntryPoint;
+            WorkingDirectory = container.ContainerWorkDirectory;
+            CreateOptions = container.ContainerCreateOptions;
+            if (!string.IsNullOrEmpty(container.RegistryAuthUsername))
+            {
+                Registry = new ContainerRegistry
+                {
+                    Username = container.RegistryAuthUsername,
+                    Password = container.RegistryAuthPassword,
+                    ServerUrl = container.RegistryServer,
+                };
+            }
+            EnvironmentVariables = container.ContainerEnvironmentVariables;
+            PortMappings = container.UserPortMappings.Select(p => p.Value).ToList();
+            SystemMountVolumes = container.SystemMountVolumes;
+            UserMountVolumes = container.UserMountVolumes;
+        }
+    }
+
+    public static class ContainerInfoExtensions
+    {
+        public static HookContainer GetHookContainer(this ContainerInfo containerInfo)
+        {
+            return new HookContainer(containerInfo);
+        }
+    }
+}

src/Runner.Worker/Container/ContainerHooks/HookResponse.cs

@@ -0,0 +1,37 @@
+using System;
+using System.Collections.Generic;
+using Newtonsoft.Json.Linq;
+
+namespace GitHub.Runner.Worker.Container.ContainerHooks
+{
+    public class HookResponse
+    {
+        public JObject State { get; set; }
+        public virtual void Validate(HookInput input) { }
+    }
+    public class PrepareJobResponse : HookResponse
+    {
+        public ResponseContext Context { get; set; }
+        public bool? IsAlpine { get; set; }
+
+        public override void Validate(HookInput input)
+        {
+            bool hasJobContainer = ((PrepareJobArgs)input.Args).Container != null;
+            if (hasJobContainer && IsAlpine == null)
+            {
+                throw new Exception("The property 'isAlpine' is required but was not found in the response file.");
+            }
+        }
+    }
+    public class ResponseContext
+    {
+        public ResponseContainer Container { get; set; }
+        public IList<ResponseContainer> Services { get; set; } = new List<ResponseContainer>();
+    }
+    public class ResponseContainer
+    {
+        public string Id { get; set; }
+        public string Network { get; set; }
+        public IDictionary<string, string> Ports { get; set; }
+    }
+}

src/Runner.Worker/Container/ContainerInfo.cs

@@ -1,16 +1,16 @@
 using System;
 using System.Collections.Generic;
 using System.IO;
-using GitHub.Runner.Common.Util;
 using GitHub.Runner.Common;
 using GitHub.Runner.Sdk;
 using Pipelines = GitHub.DistributedTask.Pipelines;
+using System.Collections.ObjectModel;
+using System.Linq;
 
 namespace GitHub.Runner.Worker.Container
 {
     public class ContainerInfo
     {
-        private IDictionary<string, string> _userMountVolumes;
         private List<MountVolume> _mountVolumes;
         private IDictionary<string, string> _userPortMappings;
         private List<PortMapping> _portMappings;
@@ -68,8 +68,7 @@ namespace GitHub.Runner.Worker.Container
             {
                 foreach (var volume in container.Volumes)
                 {
-                    UserMountVolumes[volume] = volume;
-                    MountVolumes.Add(new MountVolume(volume));
+                    MountVolumes.Add(new MountVolume(volume, isUserProvided: true));
                 }
             }
 
@@ -91,6 +90,7 @@ namespace GitHub.Runner.Worker.Container
         public string RegistryAuthUsername { get; set; }
         public string RegistryAuthPassword { get; set; }
         public bool IsJobContainer { get; set; }
+        public bool IsAlpine { get; set; }
 
         public IDictionary<string, string> ContainerEnvironmentVariables
         {
@@ -104,19 +104,20 @@ namespace GitHub.Runner.Worker.Container
                 return _environmentVariables;
             }
         }
-
-        public IDictionary<string, string> UserMountVolumes
+        public ReadOnlyCollection<MountVolume> UserMountVolumes
         {
             get
             {
-                if (_userMountVolumes == null)
-                {
-                    _userMountVolumes = new Dictionary<string, string>();
-                }
-                return _userMountVolumes;
+                return MountVolumes.Where(v => !string.IsNullOrEmpty(v.UserProvidedValue)).ToList().AsReadOnly();
+            }
+        }
+        public ReadOnlyCollection<MountVolume> SystemMountVolumes
+        {
+            get
+            {
+                return MountVolumes.Where(v => string.IsNullOrEmpty(v.UserProvidedValue)).ToList().AsReadOnly();
             }
         }
-
         public List<MountVolume> MountVolumes
         {
             get
@@ -232,6 +233,14 @@ namespace GitHub.Runner.Worker.Container
             }
         }
 
+        public void AddPortMappings(IDictionary<string, string> portMappings)
+        {
+            foreach (var pair in portMappings)
+            {
+                PortMappings.Add(new PortMapping(pair.Key, pair.Value));
+            }
+        }
+
         public void AddPathTranslateMapping(string hostCommonPath, string containerCommonPath)
         {
             _pathMappings.Insert(0, new PathMapping(hostCommonPath, containerCommonPath));
@@ -260,18 +269,27 @@ namespace GitHub.Runner.Worker.Container
 
     public class MountVolume
     {
+        public string UserProvidedValue { get; set; }
         public MountVolume(string sourceVolumePath, string targetVolumePath, bool readOnly = false)
         {
             this.SourceVolumePath = sourceVolumePath;
             this.TargetVolumePath = targetVolumePath;
             this.ReadOnly = readOnly;
         }
-
         public MountVolume(string fromString)
         {
             ParseVolumeString(fromString);
         }
 
+        public MountVolume(string fromString, bool isUserProvided)
+        {
+            ParseVolumeString(fromString);
+            if (isUserProvided)
+            {
+                UserProvidedValue = fromString;
+            }
+        }
+
         private void ParseVolumeString(string volume)
         {
             var volumeSplit = volume.Split(":");
@@ -313,6 +331,12 @@ namespace GitHub.Runner.Worker.Container
 
     public class PortMapping
     {
+        public PortMapping(string hostPort, string containerPort)
+        {
+            this.HostPort = hostPort;
+            this.ContainerPort = containerPort;
+        }
+
         public PortMapping(string hostPort, string containerPort, string protocol)
         {
             this.HostPort = hostPort;

src/Runner.Worker/ContainerOperationProvider.cs

@@ -1,7 +1,6 @@
 using System;
 using System.Collections.Generic;
 using System.IO;
-using System.ServiceProcess;
 using System.Threading.Tasks;
 using System.Linq;
 using System.Threading;
@@ -10,8 +9,12 @@ using GitHub.Services.Common;
 using GitHub.Runner.Common;
 using GitHub.Runner.Sdk;
 using GitHub.DistributedTask.Pipelines.ContextData;
-using Microsoft.Win32;
 using GitHub.DistributedTask.Pipelines.ObjectTemplating;
+using GitHub.Runner.Worker.Container.ContainerHooks;
+#if OS_WINDOWS // keep win specific imports around even through we don't support containers on win at the moment
+using System.ServiceProcess;
+using Microsoft.Win32;
+#endif
 
 namespace GitHub.Runner.Worker
 {
@@ -25,11 +28,13 @@ namespace GitHub.Runner.Worker
     public class ContainerOperationProvider : RunnerService, IContainerOperationProvider
     {
         private IDockerCommandManager _dockerManager;
+        private IContainerHookManager _containerHookManager;
 
         public override void Initialize(IHostContext hostContext)
         {
             base.Initialize(hostContext);
             _dockerManager = HostContext.GetService<IDockerCommandManager>();
+            _containerHookManager = HostContext.GetService<IContainerHookManager>();
         }
 
         public async Task StartContainersAsync(IExecutionContext executionContext, object data)
@@ -50,72 +55,15 @@ namespace GitHub.Runner.Worker
 
             executionContext.Debug($"Register post job cleanup for stopping/deleting containers.");
             executionContext.RegisterPostJobStep(postJobStep);
-
-            // Check whether we are inside a container.
-            // Our container feature requires to map working directory from host to the container.
-            // If we are already inside a container, we will not able to find out the real working direcotry path on the host.
-#if OS_WINDOWS
-#pragma warning disable CA1416
-            // service CExecSvc is Container Execution Agent.
-            ServiceController[] scServices = ServiceController.GetServices();
-            if (scServices.Any(x => String.Equals(x.ServiceName, "cexecsvc", StringComparison.OrdinalIgnoreCase) && x.Status == ServiceControllerStatus.Running))
+            if (FeatureManager.IsContainerHooksEnabled(executionContext.Global.Variables))
             {
-                throw new NotSupportedException("Container feature is not supported when runner is already running inside container.");
-            }
-#pragma warning restore CA1416
-#else
-            var initProcessCgroup = File.ReadLines("/proc/1/cgroup");
-            if (initProcessCgroup.Any(x => x.IndexOf(":/docker/", StringComparison.OrdinalIgnoreCase) >= 0))
-            {
-                throw new NotSupportedException("Container feature is not supported when runner is already running inside container.");
-            }
-#endif
-
-#if OS_WINDOWS
-#pragma warning disable CA1416
-            // Check OS version (Windows server 1803 is required)
-            object windowsInstallationType = Registry.GetValue(@"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion", "InstallationType", defaultValue: null);
-            ArgUtil.NotNull(windowsInstallationType, nameof(windowsInstallationType));
-            object windowsReleaseId = Registry.GetValue(@"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion", "ReleaseId", defaultValue: null);
-            ArgUtil.NotNull(windowsReleaseId, nameof(windowsReleaseId));
-            executionContext.Debug($"Current Windows version: '{windowsReleaseId} ({windowsInstallationType})'");
-
-            if (int.TryParse(windowsReleaseId.ToString(), out int releaseId))
-            {
-                if (!windowsInstallationType.ToString().StartsWith("Server", StringComparison.OrdinalIgnoreCase) || releaseId < 1803)
-                {
-                    throw new NotSupportedException("Container feature requires Windows Server 1803 or higher.");
-                }
-            }
-            else
-            {
-                throw new ArgumentOutOfRangeException(@"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ReleaseId");
-            }
-#pragma warning restore CA1416
-#endif
-
-            // Check docker client/server version
-            executionContext.Output("##[group]Checking docker version");
-            DockerVersion dockerVersion = await _dockerManager.DockerVersion(executionContext);
-            executionContext.Output("##[endgroup]");
-
-            ArgUtil.NotNull(dockerVersion.ServerVersion, nameof(dockerVersion.ServerVersion));
-            ArgUtil.NotNull(dockerVersion.ClientVersion, nameof(dockerVersion.ClientVersion));
-
-#if OS_WINDOWS
-            Version requiredDockerEngineAPIVersion = new Version(1, 30);  // Docker-EE version 17.6
-#else
-            Version requiredDockerEngineAPIVersion = new Version(1, 35); // Docker-CE version 17.12
-#endif
-
-            if (dockerVersion.ServerVersion < requiredDockerEngineAPIVersion)
-            {
-                throw new NotSupportedException($"Min required docker engine API server version is '{requiredDockerEngineAPIVersion}', your docker ('{_dockerManager.DockerPath}') server version is '{dockerVersion.ServerVersion}'");
-            }
-            if (dockerVersion.ClientVersion < requiredDockerEngineAPIVersion)
-            {
-                throw new NotSupportedException($"Min required docker engine API client version is '{requiredDockerEngineAPIVersion}', your docker ('{_dockerManager.DockerPath}') client version is '{dockerVersion.ClientVersion}'");
+                // Initialize the containers
+                containers.ForEach(container => UpdateRegistryAuthForGitHubToken(executionContext, container));
+                containers.Where(container => container.IsJobContainer).ForEach(container => MountWellKnownDirectories(executionContext, container));
+                await _containerHookManager.PrepareJobAsync(executionContext, containers);
+                return;
             }
+            await AssertCompatibleOS(executionContext);
 
             // Clean up containers left by previous runs
             executionContext.Output("##[group]Clean up resources from previous jobs");
@@ -166,6 +114,12 @@ namespace GitHub.Runner.Worker
             List<ContainerInfo> containers = data as List<ContainerInfo>;
             ArgUtil.NotNull(containers, nameof(containers));
 
+            if (FeatureManager.IsContainerHooksEnabled(executionContext.Global.Variables))
+            {
+                await _containerHookManager.CleanupJobAsync(executionContext, containers);
+                return;
+            }
+
             foreach (var container in containers)
             {
                 await StopContainerAsync(executionContext, container);
@@ -192,13 +146,12 @@ namespace GitHub.Runner.Worker
             {
                 Trace.Info($"User provided port: {port.Value}");
             }
-            foreach (var volume in container.UserMountVolumes)
+            foreach (var mount in container.UserMountVolumes)
             {
-                Trace.Info($"User provided volume: {volume.Value}");
-                var mount = new MountVolume(volume.Value);
+                Trace.Info($"User provided volume: {mount.UserProvidedValue}");
                 if (string.Equals(mount.SourceVolumePath, "/", StringComparison.OrdinalIgnoreCase))
                 {
-                    executionContext.Warning($"Volume mount {volume.Value} is going to mount '/' into the container which may cause file ownership change in the entire file system and cause Actions Runner to lose permission to access the disk.");
+                    executionContext.Warning($"Volume mount {mount.UserProvidedValue} is going to mount '/' into the container which may cause file ownership change in the entire file system and cause Actions Runner to lose permission to access the disk.");
                 }
             }
 
@@ -239,35 +192,7 @@ namespace GitHub.Runner.Worker
 
             if (container.IsJobContainer)
             {
-                // Configure job container - Mount workspace and tools, set up environment, and start long running process
-                var githubContext = executionContext.ExpressionValues["github"] as GitHubContext;
-                ArgUtil.NotNull(githubContext, nameof(githubContext));
-                var workingDirectory = githubContext["workspace"] as StringContextData;
-                ArgUtil.NotNullOrEmpty(workingDirectory, nameof(workingDirectory));
-                container.MountVolumes.Add(new MountVolume(HostContext.GetDirectory(WellKnownDirectory.Work), container.TranslateToContainerPath(HostContext.GetDirectory(WellKnownDirectory.Work))));
-#if OS_WINDOWS
-                container.MountVolumes.Add(new MountVolume(HostContext.GetDirectory(WellKnownDirectory.Externals), container.TranslateToContainerPath(HostContext.GetDirectory(WellKnownDirectory.Externals))));
-#else
-                container.MountVolumes.Add(new MountVolume(HostContext.GetDirectory(WellKnownDirectory.Externals), container.TranslateToContainerPath(HostContext.GetDirectory(WellKnownDirectory.Externals)), true));
-#endif
-                container.MountVolumes.Add(new MountVolume(HostContext.GetDirectory(WellKnownDirectory.Temp), container.TranslateToContainerPath(HostContext.GetDirectory(WellKnownDirectory.Temp))));
-                container.MountVolumes.Add(new MountVolume(HostContext.GetDirectory(WellKnownDirectory.Actions), container.TranslateToContainerPath(HostContext.GetDirectory(WellKnownDirectory.Actions))));
-                container.MountVolumes.Add(new MountVolume(HostContext.GetDirectory(WellKnownDirectory.Tools), container.TranslateToContainerPath(HostContext.GetDirectory(WellKnownDirectory.Tools))));
-
-                var tempHomeDirectory = Path.Combine(HostContext.GetDirectory(WellKnownDirectory.Temp), "_github_home");
-                Directory.CreateDirectory(tempHomeDirectory);
-                container.MountVolumes.Add(new MountVolume(tempHomeDirectory, "/github/home"));
-                container.AddPathTranslateMapping(tempHomeDirectory, "/github/home");
-                container.ContainerEnvironmentVariables["HOME"] = container.TranslateToContainerPath(tempHomeDirectory);
-
-                var tempWorkflowDirectory = Path.Combine(HostContext.GetDirectory(WellKnownDirectory.Temp), "_github_workflow");
-                Directory.CreateDirectory(tempWorkflowDirectory);
-                container.MountVolumes.Add(new MountVolume(tempWorkflowDirectory, "/github/workflow"));
-                container.AddPathTranslateMapping(tempWorkflowDirectory, "/github/workflow");
-
-                container.ContainerWorkDirectory = container.TranslateToContainerPath(workingDirectory);
-                container.ContainerEntryPoint = "tail";
-                container.ContainerEntryPointArgs = "\"-f\" \"/dev/null\"";
+                MountWellKnownDirectories(executionContext, container);
             }
 
             container.ContainerId = await _dockerManager.DockerCreate(executionContext, container);
@@ -330,6 +255,42 @@ namespace GitHub.Runner.Worker
             executionContext.Output("##[endgroup]");
         }
 
+        private void MountWellKnownDirectories(IExecutionContext executionContext, ContainerInfo container)
+        {
+            // Configure job container - Mount workspace and tools, set up environment, and start long running process
+            var githubContext = executionContext.ExpressionValues["github"] as GitHubContext;
+            ArgUtil.NotNull(githubContext, nameof(githubContext));
+            var workingDirectory = githubContext["workspace"] as StringContextData;
+            ArgUtil.NotNullOrEmpty(workingDirectory, nameof(workingDirectory));
+            container.MountVolumes.Add(new MountVolume(HostContext.GetDirectory(WellKnownDirectory.Work), container.TranslateToContainerPath(HostContext.GetDirectory(WellKnownDirectory.Work))));
+#if OS_WINDOWS
+                container.MountVolumes.Add(new MountVolume(HostContext.GetDirectory(WellKnownDirectory.Externals), container.TranslateToContainerPath(HostContext.GetDirectory(WellKnownDirectory.Externals))));
+#else
+            container.MountVolumes.Add(new MountVolume(HostContext.GetDirectory(WellKnownDirectory.Externals), container.TranslateToContainerPath(HostContext.GetDirectory(WellKnownDirectory.Externals)), true));
+#endif
+            container.MountVolumes.Add(new MountVolume(HostContext.GetDirectory(WellKnownDirectory.Temp), container.TranslateToContainerPath(HostContext.GetDirectory(WellKnownDirectory.Temp))));
+            container.MountVolumes.Add(new MountVolume(HostContext.GetDirectory(WellKnownDirectory.Actions), container.TranslateToContainerPath(HostContext.GetDirectory(WellKnownDirectory.Actions))));
+            container.MountVolumes.Add(new MountVolume(HostContext.GetDirectory(WellKnownDirectory.Tools), container.TranslateToContainerPath(HostContext.GetDirectory(WellKnownDirectory.Tools))));
+
+            var tempHomeDirectory = Path.Combine(HostContext.GetDirectory(WellKnownDirectory.Temp), "_github_home");
+            Directory.CreateDirectory(tempHomeDirectory);
+            container.MountVolumes.Add(new MountVolume(tempHomeDirectory, "/github/home"));
+            container.AddPathTranslateMapping(tempHomeDirectory, "/github/home");
+            container.ContainerEnvironmentVariables["HOME"] = container.TranslateToContainerPath(tempHomeDirectory);
+
+            var tempWorkflowDirectory = Path.Combine(HostContext.GetDirectory(WellKnownDirectory.Temp), "_github_workflow");
+            Directory.CreateDirectory(tempWorkflowDirectory);
+            container.MountVolumes.Add(new MountVolume(tempWorkflowDirectory, "/github/workflow"));
+            container.AddPathTranslateMapping(tempWorkflowDirectory, "/github/workflow");
+
+            container.ContainerWorkDirectory = container.TranslateToContainerPath(workingDirectory);
+            if (!FeatureManager.IsContainerHooksEnabled(executionContext.Global.Variables))
+            {
+                container.ContainerEntryPoint = "tail";
+                container.ContainerEntryPointArgs = "\"-f\" \"/dev/null\"";
+            }
+        }
+
         private async Task StopContainerAsync(IExecutionContext executionContext, ContainerInfo container)
         {
             Trace.Entering();
@@ -338,7 +299,7 @@ namespace GitHub.Runner.Worker
 
             if (!string.IsNullOrEmpty(container.ContainerId))
             {
-                if(!container.IsJobContainer)
+                if (!container.IsJobContainer)
                 {
                     // Print logs for service container jobs (not the "action" job itself b/c that's already logged).
                     executionContext.Output($"Print service container logs: {container.ContainerDisplayName}");
@@ -523,5 +484,74 @@ namespace GitHub.Runner.Worker
                 container.RegistryAuthPassword = executionContext.GetGitHubContext("token");
             }
         }
+
+        private async Task AssertCompatibleOS(IExecutionContext executionContext)
+        {
+            // Check whether we are inside a container.
+            // Our container feature requires to map working directory from host to the container.
+            // If we are already inside a container, we will not able to find out the real working direcotry path on the host.
+#if OS_WINDOWS
+#pragma warning disable CA1416
+            // service CExecSvc is Container Execution Agent.
+            ServiceController[] scServices = ServiceController.GetServices();
+            if (scServices.Any(x => String.Equals(x.ServiceName, "cexecsvc", StringComparison.OrdinalIgnoreCase) && x.Status == ServiceControllerStatus.Running))
+            {
+                throw new NotSupportedException("Container feature is not supported when runner is already running inside container.");
+            }
+#pragma warning restore CA1416
+#else
+            var initProcessCgroup = File.ReadLines("/proc/1/cgroup");
+            if (initProcessCgroup.Any(x => x.IndexOf(":/docker/", StringComparison.OrdinalIgnoreCase) >= 0))
+            {
+                throw new NotSupportedException("Container feature is not supported when runner is already running inside container.");
+            }
+#endif
+
+#if OS_WINDOWS
+#pragma warning disable CA1416
+            // Check OS version (Windows server 1803 is required)
+            object windowsInstallationType = Registry.GetValue(@"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion", "InstallationType", defaultValue: null);
+            ArgUtil.NotNull(windowsInstallationType, nameof(windowsInstallationType));
+            object windowsReleaseId = Registry.GetValue(@"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion", "ReleaseId", defaultValue: null);
+            ArgUtil.NotNull(windowsReleaseId, nameof(windowsReleaseId));
+            executionContext.Debug($"Current Windows version: '{windowsReleaseId} ({windowsInstallationType})'");
+
+            if (int.TryParse(windowsReleaseId.ToString(), out int releaseId))
+            {
+                if (!windowsInstallationType.ToString().StartsWith("Server", StringComparison.OrdinalIgnoreCase) || releaseId < 1803)
+                {
+                    throw new NotSupportedException("Container feature requires Windows Server 1803 or higher.");
+                }
+            }
+            else
+            {
+                throw new ArgumentOutOfRangeException(@"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ReleaseId");
+            }
+#pragma warning restore CA1416
+#endif
+
+            // Check docker client/server version
+            executionContext.Output("##[group]Checking docker version");
+            DockerVersion dockerVersion = await _dockerManager.DockerVersion(executionContext);
+            executionContext.Output("##[endgroup]");
+
+            ArgUtil.NotNull(dockerVersion.ServerVersion, nameof(dockerVersion.ServerVersion));
+            ArgUtil.NotNull(dockerVersion.ClientVersion, nameof(dockerVersion.ClientVersion));
+
+#if OS_WINDOWS
+            Version requiredDockerEngineAPIVersion = new Version(1, 30);  // Docker-EE version 17.6
+#else
+            Version requiredDockerEngineAPIVersion = new Version(1, 35); // Docker-CE version 17.12
+#endif
+
+            if (dockerVersion.ServerVersion < requiredDockerEngineAPIVersion)
+            {
+                throw new NotSupportedException($"Min required docker engine API server version is '{requiredDockerEngineAPIVersion}', your docker ('{_dockerManager.DockerPath}') server version is '{dockerVersion.ServerVersion}'");
+            }
+            if (dockerVersion.ClientVersion < requiredDockerEngineAPIVersion)
+            {
+                throw new NotSupportedException($"Min required docker engine API client version is '{requiredDockerEngineAPIVersion}', your docker ('{_dockerManager.DockerPath}') client version is '{dockerVersion.ClientVersion}'");
+            }
+        }
     }
 }

src/Runner.Worker/ExecutionContext.cs

@@ -1,17 +1,13 @@
 using System;
-using System.Collections;
 using System.Collections.Generic;
-using System.Collections.Specialized;
 using System.Globalization;
 using System.IO;
 using System.Linq;
 using System.Text;
-using System.Text.RegularExpressions;
 using System.Threading;
 using System.Threading.Tasks;
-using System.Web;
 using GitHub.DistributedTask.Expressions2;
-using GitHub.DistributedTask.Pipelines;
+using GitHub.DistributedTask.ObjectTemplating.Tokens;
 using GitHub.DistributedTask.Pipelines.ContextData;
 using GitHub.DistributedTask.Pipelines.ObjectTemplating;
 using GitHub.DistributedTask.WebApi;
@@ -19,7 +15,7 @@ using GitHub.Runner.Common;
 using GitHub.Runner.Common.Util;
 using GitHub.Runner.Sdk;
 using GitHub.Runner.Worker.Container;
-using GitHub.Services.WebApi;
+using GitHub.Runner.Worker.Handlers;
 using Newtonsoft.Json;
 using ObjectTemplating = GitHub.DistributedTask.ObjectTemplating;
 using Pipelines = GitHub.DistributedTask.Pipelines;
@@ -71,6 +67,8 @@ namespace GitHub.Runner.Worker
 
         bool IsEmbedded { get; }
 
+        List<string> StepEnvironmentOverrides { get; }
+
         ExecutionContext Root { get; }
 
         // Initialize
@@ -109,6 +107,11 @@ namespace GitHub.Runner.Worker
         void ForceTaskComplete();
         void RegisterPostJobStep(IStep step);
         void PublishStepTelemetry();
+
+        void ApplyContinueOnError(TemplateToken continueOnError);
+        void UpdateGlobalStepsContext();
+
+        void WriteWebhookPayload();
     }
 
     public sealed class ExecutionContext : RunnerService, IExecutionContext
@@ -236,6 +239,8 @@ namespace GitHub.Runner.Worker
             }
         }
 
+        public List<string> StepEnvironmentOverrides { get; } = new List<string>();
+
         public override void Initialize(IHostContext hostContext)
         {
             base.Initialize(hostContext);
@@ -438,14 +443,19 @@ namespace GitHub.Runner.Worker
 
             _logger.End();
 
+            UpdateGlobalStepsContext();
+
+            return Result.Value;
+        }
+
+        public void UpdateGlobalStepsContext()
+        {
             // Skip if generated context name. Generated context names start with "__". After 3.2 the server will never send an empty context name.
             if (!string.IsNullOrEmpty(ContextName) && !ContextName.StartsWith("__", StringComparison.Ordinal))
             {
                 Global.StepsContext.SetOutcome(ScopeName, ContextName, (Outcome ?? Result ?? TaskResult.Succeeded).ToActionResult());
                 Global.StepsContext.SetConclusion(ScopeName, ContextName, (Result ?? TaskResult.Succeeded).ToActionResult());
             }
-
-            return Result.Value;
         }
 
         public void SetRunnerContext(string name, string value)
@@ -550,10 +560,15 @@ namespace GitHub.Runner.Worker
                 issue.Message = issue.Message[.._maxIssueMessageLength];
             }
 
+            // Tracking the line number (logFileLineNumber) and step number (stepNumber) for each issue that gets created
+            // Actions UI from the run summary page use both values to easily link to an exact locations in logs where annotations originate from
+            if (_record.Order != null)
+            {
+                issue.Data["stepNumber"] = _record.Order.ToString();
+            }
+
             if (issue.Type == IssueType.Error)
             {
-                // tracking line number for each issue in log file
-                // log UI use this to navigate from issue to log
                 if (!string.IsNullOrEmpty(logMessage))
                 {
                     long logLineNumber = Write(WellKnownTags.Error, logMessage);
@@ -569,8 +584,6 @@ namespace GitHub.Runner.Worker
             }
             else if (issue.Type == IssueType.Warning)
             {
-                // tracking line number for each issue in log file
-                // log UI use this to navigate from issue to log
                 if (!string.IsNullOrEmpty(logMessage))
                 {
                     long logLineNumber = Write(WellKnownTags.Warning, logMessage);
@@ -586,9 +599,6 @@ namespace GitHub.Runner.Worker
             }
             else if (issue.Type == IssueType.Notice)
             {
-
-                // tracking line number for each issue in log file
-                // log UI use this to navigate from issue to log
                 if (!string.IsNullOrEmpty(logMessage))
                 {
                     long logLineNumber = Write(WellKnownTags.Notice, logMessage);
@@ -991,6 +1001,24 @@ namespace GitHub.Runner.Worker
             }
         }
 
+        public void WriteWebhookPayload()
+        {
+            // Makes directory for event_path data
+            var tempDirectory = HostContext.GetDirectory(WellKnownDirectory.Temp);
+            var workflowDirectory = Path.Combine(tempDirectory, "_github_workflow");
+            Directory.CreateDirectory(workflowDirectory);
+            var gitHubEvent = GetGitHubContext("event");
+
+            // adds the GitHub event path/file if the event exists
+            if (gitHubEvent != null)
+            {
+                var workflowFile = Path.Combine(workflowDirectory, "event.json");
+                Trace.Info($"Write event payload to {workflowFile}");
+                File.WriteAllText(workflowFile, gitHubEvent, new UTF8Encoding(false));
+                SetGitHubContext("event_path", workflowFile);
+            }
+        }
+
         private void InitializeTimelineRecord(Guid timelineId, Guid timelineRecordId, Guid? parentTimelineRecordId, string recordType, string displayName, string refName, int? order)
         {
             _mainTimelineId = timelineId;
@@ -1045,6 +1073,36 @@ namespace GitHub.Runner.Worker
             var newGuid = Guid.NewGuid();
             return CreateChild(newGuid, displayName, newGuid.ToString("N"), null, null, ActionRunStage.Post, intraActionState, _childTimelineRecordOrder - Root.PostJobSteps.Count, siblingScopeName: siblingScopeName);
         }
+
+        public void ApplyContinueOnError(TemplateToken continueOnErrorToken)
+        {
+            if (Result != TaskResult.Failed)
+            {
+                return;
+            }
+            var continueOnError = false;
+            try
+            {
+                var templateEvaluator = this.ToPipelineTemplateEvaluator();
+                continueOnError = templateEvaluator.EvaluateStepContinueOnError(continueOnErrorToken, ExpressionValues, ExpressionFunctions);
+            }
+            catch (Exception ex)
+            {
+                Trace.Info("The step failed and an error occurred when attempting to determine whether to continue on error.");
+                Trace.Error(ex);
+                this.Error("The step failed and an error occurred when attempting to determine whether to continue on error.");
+                this.Error(ex);
+            }
+
+            if (continueOnError)
+            {
+                Outcome = Result;
+                Result = TaskResult.Succeeded;
+                Trace.Info($"Updated step result (continue on error)");
+            }
+
+            UpdateGlobalStepsContext();
+        }
     }
 
     // The Error/Warning/etc methods are created as extension methods to simplify unit testing.
@@ -1066,7 +1124,6 @@ namespace GitHub.Runner.Worker
             context.Error(ex.Message);
             context.Debug(ex.ToString());
         }
-
         // Do not add a format string overload. See comment on ExecutionContext.Write().
         public static void Error(this IExecutionContext context, string message)
         {
@@ -1140,6 +1197,66 @@ namespace GitHub.Runner.Worker
         {
             return new TemplateTraceWriter(context);
         }
+
+        public static DictionaryContextData GetExpressionValues(this IExecutionContext context, IStepHost stepHost)
+        {
+            if (stepHost is ContainerStepHost)
+            {
+
+                var expressionValues = context.ExpressionValues.Clone() as DictionaryContextData;
+                context.UpdatePathsInExpressionValues("github", expressionValues, stepHost);
+                context.UpdatePathsInExpressionValues("runner", expressionValues, stepHost);
+                return expressionValues;
+            }
+            else
+            {
+                return context.ExpressionValues.Clone() as DictionaryContextData;
+            }
+        }
+
+        private static void UpdatePathsInExpressionValues(this IExecutionContext context, string contextName, DictionaryContextData expressionValues, IStepHost stepHost)
+        {
+            var dict = expressionValues[contextName].AssertDictionary($"expected context {contextName} to be a dictionary");
+            context.ResolvePathsInExpressionValuesDictionary(dict, stepHost);
+            expressionValues[contextName] = dict;
+        }
+
+        private static void ResolvePathsInExpressionValuesDictionary(this IExecutionContext context, DictionaryContextData dict, IStepHost stepHost)
+        {
+            foreach (var key in dict.Keys.ToList())
+            {
+                if (dict[key] is StringContextData)
+                {
+                    var value = dict[key].ToString();
+                    if (!string.IsNullOrEmpty(value))
+                    {
+                        dict[key] = new StringContextData(stepHost.ResolvePathForStepHost(context, value));
+                    }
+                }
+                else if (dict[key] is DictionaryContextData)
+                {
+                    var innerDict = dict[key].AssertDictionary("expected dictionary");
+                    context.ResolvePathsInExpressionValuesDictionary(innerDict, stepHost);
+                    var updatedDict = new DictionaryContextData();
+                    foreach (var k in innerDict.Keys.ToList())
+                    {
+                        updatedDict[k] = innerDict[k];
+                    }
+                    dict[key] = updatedDict;
+                }
+                else if (dict[key] is CaseSensitiveDictionaryContextData)
+                {
+                    var innerDict = dict[key].AssertDictionary("expected dictionary");
+                    context.ResolvePathsInExpressionValuesDictionary(innerDict, stepHost);
+                    var updatedDict = new CaseSensitiveDictionaryContextData();
+                    foreach (var k in innerDict.Keys.ToList())
+                    {
+                        updatedDict[k] = innerDict[k];
+                    }
+                    dict[key] = updatedDict;
+                }
+            }
+        }
     }
 
     internal sealed class TemplateTraceWriter : ObjectTemplating.ITraceWriter

src/Runner.Worker/FeatureManager.cs

@@ -0,0 +1,15 @@
+using System;
+using GitHub.Runner.Common;
+
+namespace GitHub.Runner.Worker
+{
+    public class FeatureManager
+    {
+        public static bool IsContainerHooksEnabled(Variables variables)
+        {
+            var isContainerHookFeatureFlagSet = variables?.GetBoolean(Constants.Runner.Features.AllowRunnerContainerHooks) ?? false;
+            var isContainerHooksPathSet = !string.IsNullOrEmpty(Environment.GetEnvironmentVariable(Constants.Hooks.ContainerHooksPath));
+            return isContainerHookFeatureFlagSet && isContainerHooksPathSet;
+        }
+    }
+}

src/Runner.Worker/FileCommandManager.cs

@@ -266,7 +266,7 @@ namespace GitHub.Runner.Worker
 
     public sealed class CreateStepSummaryCommand : RunnerService, IFileCommandExtension
     {
-        private const int _attachmentSizeLimit = 128 * 1024;
+        public const int AttachmentSizeLimit = 1024 * 1024;
 
         public string ContextName => "step_summary";
         public string FilePrefix => "step_summary_";
@@ -275,12 +275,6 @@ namespace GitHub.Runner.Worker
 
         public void ProcessCommand(IExecutionContext context, string filePath, ContainerInfo container)
         {
-            if (!context.Global.Variables.GetBoolean("DistributedTask.UploadStepSummary") ?? true)
-            {
-                Trace.Info("Step Summary is disabled; skipping attachment upload");
-                return;
-            }
-
             if (String.IsNullOrEmpty(filePath) || !File.Exists(filePath))
             {
                 Trace.Info($"Step Summary file ({filePath}) does not exist; skipping attachment upload");
@@ -296,9 +290,9 @@ namespace GitHub.Runner.Worker
                     return;
                 }
 
-                if (fileSize > _attachmentSizeLimit)
+                if (fileSize > AttachmentSizeLimit)
                 {
-                    context.Error(String.Format(Constants.Runner.UnsupportedSummarySize, _attachmentSizeLimit / 1024, fileSize / 1024));
+                    context.Error(String.Format(Constants.Runner.UnsupportedSummarySize, AttachmentSizeLimit / 1024, fileSize / 1024));
                     Trace.Info($"Step Summary file ({filePath}) is too large ({fileSize} bytes); skipping attachment upload");
 
                     return;

src/Runner.Worker/GitHubContext.cs

@@ -8,10 +8,10 @@ namespace GitHub.Runner.Worker
     {
         private readonly HashSet<string> _contextEnvAllowlist = new HashSet<string>(StringComparer.OrdinalIgnoreCase)
         {
-            "action",
             "action_path",
             "action_ref",
             "action_repository",
+            "action",
             "actor",
             "api_url",
             "base_ref",
@@ -22,12 +22,12 @@ namespace GitHub.Runner.Worker
             "head_ref",
             "job",
             "path",
-            "ref",
             "ref_name",
             "ref_protected",
             "ref_type",
-            "repository",
+            "ref",
             "repository_owner",
+            "repository",
             "retention_days",
             "run_attempt",
             "run_id",
@@ -35,6 +35,7 @@ namespace GitHub.Runner.Worker
             "server_url",
             "sha",
             "step_summary",
+            "triggering_actor",
             "workflow",
             "workspace",
         };

src/Runner.Worker/GlobalContext.cs

@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using GitHub.DistributedTask.WebApi;
 using GitHub.Runner.Common.Util;
 using GitHub.Runner.Worker.Container;
+using Newtonsoft.Json.Linq;
 
 namespace GitHub.Runner.Worker
 {
@@ -22,5 +23,6 @@ namespace GitHub.Runner.Worker
         public StepsContext StepsContext { get; set; }
         public Variables Variables { get; set; }
         public bool WriteDebug { get; set; }
+        public JObject ContainerHookState { get; set; }
     }
 }

src/Runner.Worker/Handlers/CompositeActionHandler.cs

@@ -1,8 +1,6 @@
 using System;
 using System.Collections.Generic;
-using System.IO;
 using System.Linq;
-using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
 using GitHub.DistributedTask.Expressions2;
@@ -13,7 +11,8 @@ using GitHub.DistributedTask.WebApi;
 using GitHub.Runner.Common;
 using GitHub.Runner.Common.Util;
 using GitHub.Runner.Sdk;
-using GitHub.Runner.Worker;
+using GitHub.Runner.Worker.Container;
+using GitHub.Runner.Worker.Container.ContainerHooks;
 using GitHub.Runner.Worker.Expressions;
 using Pipelines = GitHub.DistributedTask.Pipelines;
 
@@ -267,7 +266,11 @@ namespace GitHub.Runner.Worker.Handlers
 #endif
                     foreach (var pair in dict)
                     {
-                        envContext[pair.Key] = pair.Value;
+                        // Skip global env, otherwise we merge an outdated global env
+                        if (ExecutionContext.StepEnvironmentOverrides.Contains(pair.Key))
+                        {
+                            envContext[pair.Key] = pair.Value;
+                        }
                     }
                 }
 
@@ -276,11 +279,13 @@ namespace GitHub.Runner.Worker.Handlers
                     if (step is IActionRunner actionStep)
                     {
                         // Evaluate and merge embedded-step env
+                        step.ExecutionContext.StepEnvironmentOverrides.AddRange(ExecutionContext.StepEnvironmentOverrides);
                         var templateEvaluator = step.ExecutionContext.ToPipelineTemplateEvaluator();
                         var actionEnvironment = templateEvaluator.EvaluateStepEnvironment(actionStep.Action.Environment, step.ExecutionContext.ExpressionValues, step.ExecutionContext.ExpressionFunctions, Common.Util.VarUtil.EnvironmentVariableKeyComparer);
                         foreach (var env in actionEnvironment)
                         {
                             envContext[env.Key] = new StringContextData(env.Value ?? string.Empty);
+                            step.ExecutionContext.StepEnvironmentOverrides.Add(env.Key);
                         }
                     }
                 }
@@ -407,7 +412,7 @@ namespace GitHub.Runner.Worker.Handlers
                 }
 
                 // Update context
-                SetStepsContext(step);
+                step.ExecutionContext.UpdateGlobalStepsContext();
             }
         }
 
@@ -452,6 +457,8 @@ namespace GitHub.Runner.Worker.Handlers
                 SetStepConclusion(step, Common.Util.TaskResultUtil.MergeTaskResults(step.ExecutionContext.Result, step.ExecutionContext.CommandResult.Value));
             }
 
+            step.ExecutionContext.ApplyContinueOnError(step.ContinueOnError);
+
             Trace.Info($"Step result: {step.ExecutionContext.Result}");
             step.ExecutionContext.Debug($"Finished: {step.DisplayName}");
             step.ExecutionContext.PublishStepTelemetry();
@@ -460,16 +467,7 @@ namespace GitHub.Runner.Worker.Handlers
         private void SetStepConclusion(IStep step, TaskResult result)
         {
             step.ExecutionContext.Result = result;
-            SetStepsContext(step);
-        }
-        private void SetStepsContext(IStep step)
-        {
-            if (!string.IsNullOrEmpty(step.ExecutionContext.ContextName) && !step.ExecutionContext.ContextName.StartsWith("__", StringComparison.Ordinal))
-            {
-                // TODO: when we support continue on error, we may need to do logic here to change conclusion based on the continue on error result
-                step.ExecutionContext.Global.StepsContext.SetOutcome(step.ExecutionContext.ScopeName, step.ExecutionContext.ContextName, (step.ExecutionContext.Result ?? TaskResult.Succeeded).ToActionResult());
-                step.ExecutionContext.Global.StepsContext.SetConclusion(step.ExecutionContext.ScopeName, step.ExecutionContext.ContextName, (step.ExecutionContext.Result ?? TaskResult.Succeeded).ToActionResult());
-            }
+            step.ExecutionContext.UpdateGlobalStepsContext();
         }
     }
 }

src/Runner.Worker/Handlers/ContainerActionHandler.cs

@@ -8,6 +8,7 @@ using GitHub.DistributedTask.WebApi;
 using GitHub.Runner.Common;
 using GitHub.Runner.Sdk;
 using GitHub.Runner.Worker.Container;
+using GitHub.Runner.Worker.Container.ContainerHooks;
 using Pipelines = GitHub.DistributedTask.Pipelines;
 
 namespace GitHub.Runner.Worker.Handlers
@@ -38,6 +39,8 @@ namespace GitHub.Runner.Worker.Handlers
             AddInputsToEnvironment();
 
             var dockerManager = HostContext.GetService<IDockerCommandManager>();
+            var containerHookManager = HostContext.GetService<IContainerHookManager>();
+            string dockerFile = null;
 
             // container image haven't built/pull
             if (Data.Image.StartsWith("docker://", StringComparison.OrdinalIgnoreCase))
@@ -47,26 +50,28 @@ namespace GitHub.Runner.Worker.Handlers
             else if (Data.Image.EndsWith("Dockerfile") || Data.Image.EndsWith("dockerfile"))
             {
                 // ensure docker file exist
-                var dockerFile = Path.Combine(ActionDirectory, Data.Image);
+                dockerFile = Path.Combine(ActionDirectory, Data.Image);
                 ArgUtil.File(dockerFile, nameof(Data.Image));
-
-                ExecutionContext.Output($"##[group]Building docker image");
-                ExecutionContext.Output($"Dockerfile for action: '{dockerFile}'.");
-                var imageName = $"{dockerManager.DockerInstanceLabel}:{ExecutionContext.Id.ToString("N")}";
-                var buildExitCode = await dockerManager.DockerBuild(
-                    ExecutionContext,
-                    ExecutionContext.GetGitHubContext("workspace"),
-                    dockerFile,
-                    Directory.GetParent(dockerFile).FullName,
-                    imageName);
-                ExecutionContext.Output("##[endgroup]");
-
-                if (buildExitCode != 0)
+                if (!FeatureManager.IsContainerHooksEnabled(ExecutionContext.Global.Variables))
                 {
-                    throw new InvalidOperationException($"Docker build failed with exit code {buildExitCode}");
-                }
+                    ExecutionContext.Output($"##[group]Building docker image");
+                    ExecutionContext.Output($"Dockerfile for action: '{dockerFile}'.");
+                    var imageName = $"{dockerManager.DockerInstanceLabel}:{ExecutionContext.Id.ToString("N")}";
+                    var buildExitCode = await dockerManager.DockerBuild(
+                        ExecutionContext,
+                        ExecutionContext.GetGitHubContext("workspace"),
+                        dockerFile,
+                        Directory.GetParent(dockerFile).FullName,
+                        imageName);
+                    ExecutionContext.Output("##[endgroup]");
 
-                Data.Image = imageName;
+                    if (buildExitCode != 0)
+                    {
+                        throw new InvalidOperationException($"Docker build failed with exit code {buildExitCode}");
+                    }
+
+                    Data.Image = imageName;
+                }
             }
 
             string type = Action.Type == Pipelines.ActionSourceType.Repository ? "Dockerfile" : "DockerHub";
@@ -220,14 +225,21 @@ namespace GitHub.Runner.Worker.Handlers
                 container.ContainerEnvironmentVariables[variable.Key] = container.TranslateToContainerPath(variable.Value);
             }
 
-            using (var stdoutManager = new OutputManager(ExecutionContext, ActionCommandManager, container))
-            using (var stderrManager = new OutputManager(ExecutionContext, ActionCommandManager, container))
+            if (FeatureManager.IsContainerHooksEnabled(ExecutionContext.Global.Variables))
             {
-                var runExitCode = await dockerManager.DockerRun(ExecutionContext, container, stdoutManager.OnDataReceived, stderrManager.OnDataReceived);
-                ExecutionContext.Debug($"Docker Action run completed with exit code {runExitCode}");
-                if (runExitCode != 0)
+                await containerHookManager.RunContainerStepAsync(ExecutionContext, container, dockerFile);
+            }
+            else
+            {
+                using (var stdoutManager = new OutputManager(ExecutionContext, ActionCommandManager, container))
+                using (var stderrManager = new OutputManager(ExecutionContext, ActionCommandManager, container))
                 {
-                    ExecutionContext.Result = TaskResult.Failed;
+                    var runExitCode = await dockerManager.DockerRun(ExecutionContext, container, stdoutManager.OnDataReceived, stderrManager.OnDataReceived);
+                    ExecutionContext.Debug($"Docker Action run completed with exit code {runExitCode}");
+                    if (runExitCode != 0)
+                    {
+                        ExecutionContext.Result = TaskResult.Failed;
+                    }
                 }
             }
 #endif

src/Runner.Worker/Handlers/Handler.cs

@@ -36,6 +36,7 @@ namespace GitHub.Runner.Worker.Handlers
         protected IActionCommandManager ActionCommandManager { get; private set; }
 
         public Pipelines.ActionStepDefinitionReference Action { get; set; }
+        public bool IsActionStep => Action != null; 
         public Dictionary<string, string> Environment { get; set; }
         public Variables RuntimeVariables { get; set; }
         public IExecutionContext ExecutionContext { get; set; }
@@ -49,13 +50,18 @@ namespace GitHub.Runner.Worker.Handlers
             // Print out action details
             PrintActionDetails(stage);
 
-            // Get telemetry for the action.
-            PopulateActionTelemetry();
+            // Get telemetry for the action
+            PopulateActionTelemetry(stage);
         }
 
-        protected void PopulateActionTelemetry()
+        protected void PopulateActionTelemetry(ActionRunStage stage)
         {
-            if (Action.Type == Pipelines.ActionSourceType.ContainerRegistry)
+            if (!IsActionStep)
+            {
+                ExecutionContext.StepTelemetry.Type = "runner";
+                ExecutionContext.StepTelemetry.Action = $"{stage} Job Hook";
+            }
+            else if (Action.Type == Pipelines.ActionSourceType.ContainerRegistry)
             {
                 ExecutionContext.StepTelemetry.Type = "docker";
                 var registryAction = Action as Pipelines.ContainerRegistryReference;

src/Runner.Worker/Handlers/NodeScriptActionHandler.cs

@@ -3,9 +3,14 @@ using System.IO;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using GitHub.DistributedTask.Pipelines;
+using GitHub.DistributedTask.Pipelines.ContextData;
 using GitHub.DistributedTask.WebApi;
 using GitHub.Runner.Common;
 using GitHub.Runner.Sdk;
+using GitHub.Runner.Common.Util;
+using GitHub.Runner.Worker.Container;
+using GitHub.Runner.Worker.Container.ContainerHooks;
 
 namespace GitHub.Runner.Worker.Handlers
 {
@@ -92,6 +97,20 @@ namespace GitHub.Runner.Worker.Handlers
                 workingDirectory = HostContext.GetDirectory(WellKnownDirectory.Work);
             }
 
+#if OS_OSX
+            if (string.Equals(Data.NodeVersion, "node12", StringComparison.OrdinalIgnoreCase) &&
+                Constants.Runner.PlatformArchitecture.Equals(Constants.Architecture.Arm64))
+            {
+                ExecutionContext.Output($"The node12 is not supported on macOS ARM64 platform. Use node16 instead.");
+                Data.NodeVersion = "node16";
+            }
+#endif
+            string forcedNodeVersion = System.Environment.GetEnvironmentVariable(Constants.Variables.Agent.ForcedActionsNodeVersion);
+
+            if (forcedNodeVersion == "node16" && Data.NodeVersion != "node16")
+            {
+                Data.NodeVersion = "node16";
+            }
             var nodeRuntimeVersion = await StepHost.DetermineNodeRuntimeVersion(ExecutionContext, Data.NodeVersion);
             string file = Path.Combine(HostContext.GetDirectory(WellKnownDirectory.Externals), nodeRuntimeVersion, "bin", $"node{IOUtil.ExeExtension}");
 
@@ -99,7 +118,7 @@ namespace GitHub.Runner.Worker.Handlers
             // 1) Wrap the script file path in double quotes.
             // 2) Escape double quotes within the script file path. Double-quote is a valid
             // file name character on Linux.
-            string arguments = StepHost.ResolvePathForStepHost(StringUtil.Format(@"""{0}""", target.Replace(@"""", @"\""")));
+            string arguments = StepHost.ResolvePathForStepHost(ExecutionContext, StringUtil.Format(@"""{0}""", target.Replace(@"""", @"\""")));
 
 #if OS_WINDOWS
             // It appears that node.exe outputs UTF8 when not in TTY mode.
@@ -112,6 +131,17 @@ namespace GitHub.Runner.Worker.Handlers
             // Remove environment variable that may cause conflicts with the node within the runner.
             Environment.Remove("NODE_ICU_DATA"); // https://github.com/actions/runner/issues/795
 
+            if (Data.NodeVersion == "node12" && (ExecutionContext.Global.Variables.GetBoolean(Constants.Runner.Features.Node12Warning) ?? false))
+            {
+                if (!ExecutionContext.JobContext.ContainsKey("Node12ActionsWarnings"))
+                {                     
+                    ExecutionContext.JobContext["Node12ActionsWarnings"] = new ArrayContextData();
+                }
+                var repoAction = Action as RepositoryPathReference;
+                var actionDisplayName = new StringContextData(repoAction.Name ?? repoAction.Path); // local actions don't have a 'Name'                
+                ExecutionContext.JobContext["Node12ActionsWarnings"].AssertArray("Node12ActionsWarnings").Add(actionDisplayName);
+            }
+
             using (var stdoutManager = new OutputManager(ExecutionContext, ActionCommandManager))
             using (var stderrManager = new OutputManager(ExecutionContext, ActionCommandManager))
             {
@@ -121,14 +151,16 @@ namespace GitHub.Runner.Worker.Handlers
                 // Execute the process. Exit code 0 should always be returned.
                 // A non-zero exit code indicates infrastructural failure.
                 // Task failure should be communicated over STDOUT using ## commands.
-                Task<int> step = StepHost.ExecuteAsync(workingDirectory: StepHost.ResolvePathForStepHost(workingDirectory),
-                                                fileName: StepHost.ResolvePathForStepHost(file),
+                Task<int> step = StepHost.ExecuteAsync(ExecutionContext,
+                                                workingDirectory: StepHost.ResolvePathForStepHost(ExecutionContext, workingDirectory),
+                                                fileName: StepHost.ResolvePathForStepHost(ExecutionContext, file),
                                                 arguments: arguments,
                                                 environment: Environment,
                                                 requireExitCodeZero: false,
                                                 outputEncoding: outputEncoding,
                                                 killProcessOnCancel: false,
                                                 inheritConsoleHandler: !ExecutionContext.Global.Variables.Retain_Default_Encoding,
+                                                standardInInput: null,
                                                 cancellationToken: ExecutionContext.CancellationToken);
 
                 // Wait for either the node exit or force finish through ##vso command

src/Runner.Worker/Handlers/OutputManager.cs

@@ -151,6 +151,11 @@ namespace GitHub.Runner.Worker.Handlers
                 }
             }
 
+            if (line.Contains("fatal: unsafe repository", StringComparison.OrdinalIgnoreCase))
+            {
+                _executionContext.StepTelemetry.ErrorMessages.Add(line);
+            }
+
             // Regular output
             _executionContext.Output(line);
         }

src/Runner.Worker/Handlers/ScriptHandler.cs

@@ -8,6 +8,8 @@ using GitHub.DistributedTask.WebApi;
 using GitHub.Runner.Common;
 using GitHub.Runner.Common.Util;
 using GitHub.Runner.Sdk;
+using GitHub.Runner.Worker.Container;
+using GitHub.Runner.Worker.Container.ContainerHooks;
 using Pipelines = GitHub.DistributedTask.Pipelines;
 
 namespace GitHub.Runner.Worker.Handlers
@@ -24,16 +26,22 @@ namespace GitHub.Runner.Worker.Handlers
 
         protected override void PrintActionDetails(ActionRunStage stage)
         {
-
-            if (stage == ActionRunStage.Post)
+            // if we're executing a Job Extension, we won't have an 'Action'
+            if (!IsActionStep)
             {
-                throw new NotSupportedException("Script action should not have 'Post' job action.");
+                if (Inputs.TryGetValue("path", out var path))
+                {
+                    ExecutionContext.Output($"##[group]Run '{path}'");
+                }
+                else
+                {
+                    throw new InvalidOperationException("Inputs 'path' must be set for job extensions");
+                }
             }
-
-            Inputs.TryGetValue("script", out string contents);
-            contents = contents ?? string.Empty;
-            if (Action.Type == Pipelines.ActionSourceType.Script)
+            else if (Action.Type == Pipelines.ActionSourceType.Script)
             {
+                Inputs.TryGetValue("script", out string contents);
+                contents = contents ?? string.Empty;
                 var firstLine = contents.TrimStart(' ', '\t', '\r', '\n');
                 var firstNewLine = firstLine.IndexOfAny(new[] { '\r', '\n' });
                 if (firstNewLine >= 0)
@@ -42,17 +50,16 @@ namespace GitHub.Runner.Worker.Handlers
                 }
 
                 ExecutionContext.Output($"##[group]Run {firstLine}");
+                var multiLines = contents.Replace("\r\n", "\n").TrimEnd('\n').Split('\n');
+                foreach (var line in multiLines)
+                {
+                    // Bright Cyan color
+                    ExecutionContext.Output($"\x1b[36;1m{line}\x1b[0m");
+                }
             }
             else
             {
-                throw new InvalidOperationException($"Invalid action type {Action.Type} for {nameof(ScriptHandler)}");
-            }
-
-            var multiLines = contents.Replace("\r\n", "\n").TrimEnd('\n').Split('\n');
-            foreach (var line in multiLines)
-            {
-                // Bright Cyan color
-                ExecutionContext.Output($"\x1b[36;1m{line}\x1b[0m");
+                throw new InvalidOperationException($"Invalid action type {Action?.Type} for {nameof(ScriptHandler)}");
             }
 
             string argFormat;
@@ -132,11 +139,6 @@ namespace GitHub.Runner.Worker.Handlers
 
         public async Task RunAsync(ActionRunStage stage)
         {
-            if (stage == ActionRunStage.Post)
-            {
-                throw new NotSupportedException("Script action should not have 'Post' job action.");
-            }
-
             // Validate args
             Trace.Entering();
             ArgUtil.NotNull(ExecutionContext, nameof(ExecutionContext));
@@ -153,7 +155,8 @@ namespace GitHub.Runner.Worker.Handlers
             string workingDirectory = null;
             if (!Inputs.TryGetValue("workingDirectory", out workingDirectory))
             {
-                if (string.IsNullOrEmpty(ExecutionContext.ScopeName) && ExecutionContext.Global.JobDefaults.TryGetValue("run", out var runDefaults))
+                // Don't use job level working directories for hooks
+                if (IsActionStep && string.IsNullOrEmpty(ExecutionContext.ScopeName) && ExecutionContext.Global.JobDefaults.TryGetValue("run", out var runDefaults))
                 {
                     if (runDefaults.TryGetValue("working-directory", out workingDirectory))
                     {
@@ -201,18 +204,37 @@ namespace GitHub.Runner.Worker.Handlers
             }
             else
             {
-                var parsed = ScriptHandlerHelpers.ParseShellOptionString(shell);
-                shellCommand = parsed.shellCommand;
-                // For non-ContainerStepHost, the command must be located on the host by Which
-                commandPath = WhichUtil.Which(parsed.shellCommand, !isContainerStepHost, Trace, prependPath);
-                argFormat = $"{parsed.shellArgs}".TrimStart();
-                if (string.IsNullOrEmpty(argFormat))
+                // For these shells, we want to use system binaries
+                var systemShells = new string[] { "bash", "sh", "powershell", "pwsh" };
+                if (!IsActionStep && systemShells.Contains(shell))
                 {
-                    argFormat = ScriptHandlerHelpers.GetScriptArgumentsFormat(shellCommand);
+                    shellCommand = shell;
+                    commandPath = WhichUtil.Which(shell, !isContainerStepHost, Trace, prependPath);
+                    if (shell == "bash")
+                    {
+                        argFormat = ScriptHandlerHelpers.GetScriptArgumentsFormat("sh");
+                    }
+                    else
+                    {
+                        argFormat = ScriptHandlerHelpers.GetScriptArgumentsFormat(shell);
+                    }
+                }
+                else
+                {
+                    var parsed = ScriptHandlerHelpers.ParseShellOptionString(shell);
+                    shellCommand = parsed.shellCommand;
+                    // For non-ContainerStepHost, the command must be located on the host by Which
+                    commandPath = WhichUtil.Which(parsed.shellCommand, !isContainerStepHost, Trace, prependPath);
+                    argFormat = $"{parsed.shellArgs}".TrimStart();
+                    if (string.IsNullOrEmpty(argFormat))
+                    {
+                        argFormat = ScriptHandlerHelpers.GetScriptArgumentsFormat(shellCommand);
+                    }
                 }
             }
 
-            if (!string.IsNullOrEmpty(shellCommand))
+            // Don't override runner telemetry here
+            if (!string.IsNullOrEmpty(shellCommand) && IsActionStep)
             {
                 ExecutionContext.StepTelemetry.Action = shellCommand;
             }
@@ -222,10 +244,24 @@ namespace GitHub.Runner.Worker.Handlers
             {
                 throw new ArgumentException("Invalid shell option. Shell must be a valid built-in (bash, sh, cmd, powershell, pwsh) or a format string containing '{0}'");
             }
-
-            // We do not not the full path until we know what shell is being used, so that we can determine the file extension
-            var scriptFilePath = Path.Combine(tempDirectory, $"{Guid.NewGuid()}{ScriptHandlerHelpers.GetScriptFileExtension(shellCommand)}");
-            var resolvedScriptPath = $"{StepHost.ResolvePathForStepHost(scriptFilePath).Replace("\"", "\\\"")}";
+            string scriptFilePath, resolvedScriptPath;
+            if (IsActionStep)
+            {
+                // We do not not the full path until we know what shell is being used, so that we can determine the file extension
+                scriptFilePath = Path.Combine(tempDirectory, $"{Guid.NewGuid()}{ScriptHandlerHelpers.GetScriptFileExtension(shellCommand)}");
+                resolvedScriptPath = StepHost.ResolvePathForStepHost(ExecutionContext, scriptFilePath).Replace("\"", "\\\"");
+            }
+            else
+            {
+                // JobExtensionRunners run a script file, we load that from the inputs here
+                if (!Inputs.ContainsKey("path"))
+                {
+                    throw new ArgumentException("Expected 'path' input to be set");
+                }
+                scriptFilePath = Inputs["path"];
+                ArgUtil.NotNullOrEmpty(scriptFilePath, "path");
+                resolvedScriptPath = Inputs["path"].Replace("\"", "\\\"");
+            }
 
             // Format arg string with script path
             var arguments = string.Format(argFormat, resolvedScriptPath);
@@ -242,8 +278,11 @@ namespace GitHub.Runner.Worker.Handlers
             // Don't add a BOM. It causes the script to fail on some operating systems (e.g. on Ubuntu 14).
             var encoding = new UTF8Encoding(false);
 #endif            
-            // Script is written to local path (ie host) but executed relative to the StepHost, which may be a container
-            File.WriteAllText(scriptFilePath, contents, encoding);
+            if (IsActionStep)
+            {
+                // Script is written to local path (ie host) but executed relative to the StepHost, which may be a container
+                File.WriteAllText(scriptFilePath, contents, encoding);
+            }
 
             // Prepend PATH
             AddPrependPathToEnvironment();
@@ -281,6 +320,7 @@ namespace GitHub.Runner.Worker.Handlers
 
             ExecutionContext.Debug($"{fileName} {arguments}");
 
+            Inputs.TryGetValue("standardInInput", out var standardInInput);
             using (var stdoutManager = new OutputManager(ExecutionContext, ActionCommandManager))
             using (var stderrManager = new OutputManager(ExecutionContext, ActionCommandManager))
             {
@@ -288,7 +328,8 @@ namespace GitHub.Runner.Worker.Handlers
                 StepHost.ErrorDataReceived += stderrManager.OnDataReceived;
 
                 // Execute
-                int exitCode = await StepHost.ExecuteAsync(workingDirectory: StepHost.ResolvePathForStepHost(workingDirectory),
+                int exitCode = await StepHost.ExecuteAsync(ExecutionContext,
+                                            workingDirectory: StepHost.ResolvePathForStepHost(ExecutionContext, workingDirectory),
                                             fileName: fileName,
                                             arguments: arguments,
                                             environment: Environment,
@@ -296,6 +337,7 @@ namespace GitHub.Runner.Worker.Handlers
                                             outputEncoding: null,
                                             killProcessOnCancel: false,
                                             inheritConsoleHandler: !ExecutionContext.Global.Variables.Retain_Default_Encoding,
+                                            standardInInput: standardInInput,
                                             cancellationToken: ExecutionContext.CancellationToken);
 
                 // Error

src/Runner.Worker/Handlers/ScriptHandlerHelpers.cs

@@ -1,10 +1,14 @@
 
 using System;
 using System.Collections.Generic;
+using System.IO;
+using GitHub.Runner.Sdk;
+using GitHub.Runner.Common;
+using GitHub.Runner.Common.Util;
 
 namespace GitHub.Runner.Worker.Handlers
 {
-    internal class ScriptHandlerHelpers
+    internal static class ScriptHandlerHelpers
     {
         private static readonly Dictionary<string, string> _defaultArguments = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase)
         {

src/Runner.Worker/Handlers/StepHost.cs

@@ -1,18 +1,16 @@
 using System;
 using System.Collections.Generic;
-using System.IO;
+using GitHub.DistributedTask.Pipelines.ContextData;
 using System.Text;
 using System.Threading;
-using System.Threading.Channels;
 using System.Threading.Tasks;
-using GitHub.DistributedTask.WebApi;
-using GitHub.Runner.Common.Util;
 using GitHub.Runner.Worker.Container;
-using GitHub.Services.WebApi;
-using Newtonsoft.Json;
 using GitHub.Runner.Common;
 using GitHub.Runner.Sdk;
 using System.Linq;
+using GitHub.Runner.Worker.Container.ContainerHooks;
+using System.IO;
+using System.Threading.Channels;
 
 namespace GitHub.Runner.Worker.Handlers
 {
@@ -21,11 +19,12 @@ namespace GitHub.Runner.Worker.Handlers
         event EventHandler<ProcessDataReceivedEventArgs> OutputDataReceived;
         event EventHandler<ProcessDataReceivedEventArgs> ErrorDataReceived;
 
-        string ResolvePathForStepHost(string path);
+        string ResolvePathForStepHost(IExecutionContext executionContext, string path);
 
         Task<string> DetermineNodeRuntimeVersion(IExecutionContext executionContext, string preferredVersion);
 
-        Task<int> ExecuteAsync(string workingDirectory,
+        Task<int> ExecuteAsync(IExecutionContext context,
+                               string workingDirectory,
                                string fileName,
                                string arguments,
                                IDictionary<string, string> environment,
@@ -33,6 +32,7 @@ namespace GitHub.Runner.Worker.Handlers
                                Encoding outputEncoding,
                                bool killProcessOnCancel,
                                bool inheritConsoleHandler,
+                               string standardInInput,
                                CancellationToken cancellationToken);
     }
 
@@ -53,7 +53,7 @@ namespace GitHub.Runner.Worker.Handlers
         public event EventHandler<ProcessDataReceivedEventArgs> OutputDataReceived;
         public event EventHandler<ProcessDataReceivedEventArgs> ErrorDataReceived;
 
-        public string ResolvePathForStepHost(string path)
+        public string ResolvePathForStepHost(IExecutionContext executionContext, string path)
         {
             return path;
         }
@@ -63,7 +63,8 @@ namespace GitHub.Runner.Worker.Handlers
             return Task.FromResult<string>(preferredVersion);
         }
 
-        public async Task<int> ExecuteAsync(string workingDirectory,
+        public async Task<int> ExecuteAsync(IExecutionContext context,
+                                            string workingDirectory,
                                             string fileName,
                                             string arguments,
                                             IDictionary<string, string> environment,
@@ -71,10 +72,17 @@ namespace GitHub.Runner.Worker.Handlers
                                             Encoding outputEncoding,
                                             bool killProcessOnCancel,
                                             bool inheritConsoleHandler,
+                                            string standardInInput,
                                             CancellationToken cancellationToken)
         {
             using (var processInvoker = HostContext.CreateService<IProcessInvoker>())
             {
+                Channel<string> redirectStandardIn = null;
+                if (standardInInput != null)
+                {
+                    redirectStandardIn = Channel.CreateUnbounded<string>(new UnboundedChannelOptions() { SingleReader = true, SingleWriter = true });
+                    redirectStandardIn.Writer.TryWrite(standardInInput);
+                }
                 processInvoker.OutputDataReceived += OutputDataReceived;
                 processInvoker.ErrorDataReceived += ErrorDataReceived;
 
@@ -85,7 +93,7 @@ namespace GitHub.Runner.Worker.Handlers
                                                          requireExitCodeZero: requireExitCodeZero,
                                                          outputEncoding: outputEncoding,
                                                          killProcessOnCancel: killProcessOnCancel,
-                                                         redirectStandardIn: null,
+                                                         redirectStandardIn: redirectStandardIn,
                                                          inheritConsoleHandler: inheritConsoleHandler,
                                                          cancellationToken: cancellationToken);
             }
@@ -99,11 +107,15 @@ namespace GitHub.Runner.Worker.Handlers
         public event EventHandler<ProcessDataReceivedEventArgs> OutputDataReceived;
         public event EventHandler<ProcessDataReceivedEventArgs> ErrorDataReceived;
 
-        public string ResolvePathForStepHost(string path)
+        public string ResolvePathForStepHost(IExecutionContext executionContext, string path)
         {
             // make sure container exist.
             ArgUtil.NotNull(Container, nameof(Container));
-            ArgUtil.NotNullOrEmpty(Container.ContainerId, nameof(Container.ContainerId));
+            if (!FeatureManager.IsContainerHooksEnabled(executionContext.Global?.Variables))
+            {
+                // TODO: Remove nullcheck with executionContext.Global? by setting up ExecutionContext.Global at GitHub.Runner.Common.Tests.Worker.ExecutionContextL0.GetExpressionValues_ContainerStepHost
+                ArgUtil.NotNullOrEmpty(Container.ContainerId, nameof(Container.ContainerId));
+            }
 
             // remove double quotes around the path
             path = path.Trim('\"');
@@ -125,6 +137,19 @@ namespace GitHub.Runner.Worker.Handlers
 
         public async Task<string> DetermineNodeRuntimeVersion(IExecutionContext executionContext, string preferredVersion)
         {
+            // Optimistically use the default
+            string nodeExternal = preferredVersion;
+
+            if (FeatureManager.IsContainerHooksEnabled(executionContext.Global.Variables))
+            {
+                if (Container.IsAlpine)
+                {
+                    nodeExternal = CheckPlatformForAlpineContainer(executionContext, preferredVersion);
+                }
+                executionContext.Debug($"Running JavaScript Action with default external tool: {nodeExternal}");
+                return nodeExternal;
+            }
+
             // Best effort to determine a compatible node runtime
             // There may be more variation in which libraries are linked than just musl/glibc,
             // so determine based on known distribtutions instead
@@ -133,7 +158,6 @@ namespace GitHub.Runner.Worker.Handlers
 
             var output = new List<string>();
             var execExitCode = await dockerManager.DockerExec(executionContext, Container.ContainerId, string.Empty, osReleaseIdCmd, output);
-            string nodeExternal;
             if (execExitCode == 0)
             {
                 foreach (var line in output)
@@ -141,26 +165,17 @@ namespace GitHub.Runner.Worker.Handlers
                     executionContext.Debug(line);
                     if (line.ToLower().Contains("alpine"))
                     {
-                        if (!Constants.Runner.PlatformArchitecture.Equals(Constants.Architecture.X64))
-                        {
-                            var os = Constants.Runner.Platform.ToString();
-                            var arch = Constants.Runner.PlatformArchitecture.ToString();
-                            var msg = $"JavaScript Actions in Alpine containers are only supported on x64 Linux runners. Detected {os} {arch}";
-                            throw new NotSupportedException(msg);
-                        }
-                        nodeExternal = $"{preferredVersion}_alpine";
-                        executionContext.Debug($"Container distribution is alpine. Running JavaScript Action with external tool: {nodeExternal}");
+                        nodeExternal = CheckPlatformForAlpineContainer(executionContext, preferredVersion);
                         return nodeExternal;
                     }
                 }
             }
-            // Optimistically use the default
-            nodeExternal = preferredVersion;
             executionContext.Debug($"Running JavaScript Action with default external tool: {nodeExternal}");
             return nodeExternal;
         }
 
-        public async Task<int> ExecuteAsync(string workingDirectory,
+        public async Task<int> ExecuteAsync(IExecutionContext context,
+                                            string workingDirectory,
                                             string fileName,
                                             string arguments,
                                             IDictionary<string, string> environment,
@@ -168,12 +183,25 @@ namespace GitHub.Runner.Worker.Handlers
                                             Encoding outputEncoding,
                                             bool killProcessOnCancel,
                                             bool inheritConsoleHandler,
+                                            string standardInInput,
                                             CancellationToken cancellationToken)
         {
-            // make sure container exist.
             ArgUtil.NotNull(Container, nameof(Container));
-            ArgUtil.NotNullOrEmpty(Container.ContainerId, nameof(Container.ContainerId));
+            var containerHookManager = HostContext.GetService<IContainerHookManager>();
+            if (FeatureManager.IsContainerHooksEnabled(context.Global.Variables))
+            {
+                TranslateToContainerPath(environment);
+                await containerHookManager.RunScriptStepAsync(context,
+                                                                                   Container,
+                                                                                   workingDirectory,                                                                                   
+                                                                                   fileName,
+                                                                                   arguments,
+                                                                                   environment,
+                                                                                   PrependPath);
+                return (int)(context.Result ?? 0);
+            }
 
+            ArgUtil.NotNullOrEmpty(Container.ContainerId, nameof(Container.ContainerId));
             var dockerManager = HostContext.GetService<IDockerCommandManager>();
             string dockerClientPath = dockerManager.DockerPath;
 
@@ -207,12 +235,7 @@ namespace GitHub.Runner.Worker.Handlers
             dockerCommandArgs.Add(arguments);
 
             string dockerCommandArgstring = string.Join(" ", dockerCommandArgs);
-
-            // make sure all env are using container path
-            foreach (var envKey in environment.Keys.ToList())
-            {
-                environment[envKey] = this.Container.TranslateToContainerPath(environment[envKey]);
-            }
+            TranslateToContainerPath(environment);
 
             using (var processInvoker = HostContext.CreateService<IProcessInvoker>())
             {
@@ -226,7 +249,6 @@ namespace GitHub.Runner.Worker.Handlers
                 // Let .NET choose the default.
                 outputEncoding = null;
 #endif
-
                 return await processInvoker.ExecuteAsync(workingDirectory: HostContext.GetDirectory(WellKnownDirectory.Work),
                                                          fileName: dockerClientPath,
                                                          arguments: dockerCommandArgstring,
@@ -239,5 +261,28 @@ namespace GitHub.Runner.Worker.Handlers
                                                          cancellationToken: cancellationToken);
             }
         }
+
+        private string CheckPlatformForAlpineContainer(IExecutionContext executionContext, string preferredVersion)
+        {
+            string nodeExternal = preferredVersion;
+            if (!Constants.Runner.PlatformArchitecture.Equals(Constants.Architecture.X64))
+            {
+                var os = Constants.Runner.Platform.ToString();
+                var arch = Constants.Runner.PlatformArchitecture.ToString();
+                var msg = $"JavaScript Actions in Alpine containers are only supported on x64 Linux runners. Detected {os} {arch}";
+                throw new NotSupportedException(msg);
+            }
+            nodeExternal = $"{preferredVersion}_alpine";
+            executionContext.Debug($"Container distribution is alpine. Running JavaScript Action with external tool: {nodeExternal}");
+            return nodeExternal;
+        }
+
+        private void TranslateToContainerPath(IDictionary<string, string> environment)
+        {
+            foreach (var envKey in environment.Keys.ToList())
+            {
+                environment[envKey] = this.Container.TranslateToContainerPath(environment[envKey]);
+            }
+        }
     }
 }

src/Runner.Worker/JobExtension.cs

@@ -9,12 +9,14 @@ using System.Threading;
 using System.Threading.Tasks;
 using GitHub.DistributedTask.Expressions2;
 using GitHub.DistributedTask.ObjectTemplating.Tokens;
+using GitHub.DistributedTask.Pipelines;
 using GitHub.DistributedTask.Pipelines.ContextData;
 using GitHub.DistributedTask.Pipelines.ObjectTemplating;
 using GitHub.DistributedTask.WebApi;
 using GitHub.Runner.Common;
 using GitHub.Runner.Common.Util;
 using GitHub.Runner.Sdk;
+using GitHub.Runner.Worker;
 using Pipelines = GitHub.DistributedTask.Pipelines;
 
 namespace GitHub.Runner.Worker
@@ -205,6 +207,7 @@ namespace GitHub.Runner.Worker
                     // Evaluate the job container
                     context.Debug("Evaluating job container");
                     var container = templateEvaluator.EvaluateJobContainer(message.JobContainer, jobContext.ExpressionValues, jobContext.ExpressionFunctions);
+                    ValidateJobContainer(container);
                     if (container != null)
                     {
                         jobContext.Global.Container = new Container.ContainerInfo(HostContext, container);
@@ -248,6 +251,19 @@ namespace GitHub.Runner.Worker
                     Trace.Info("Downloading actions");
                     var actionManager = HostContext.GetService<IActionManager>();
                     var prepareResult = await actionManager.PrepareActionsAsync(context, message.Steps);
+
+                    // add hook to preJobSteps
+                    var startedHookPath = Environment.GetEnvironmentVariable("ACTIONS_RUNNER_HOOK_JOB_STARTED");
+                    if (!string.IsNullOrEmpty(startedHookPath))
+                    {
+                        var hookProvider = HostContext.GetService<IJobHookProvider>();
+                        var jobHookData = new JobHookData(ActionRunStage.Pre, startedHookPath);
+                        preJobSteps.Add(new JobExtensionRunner(runAsync: hookProvider.RunHook,
+                                                                          condition: $"{PipelineTemplateConstants.Always}()",
+                                                                          displayName: Constants.Hooks.JobStartedStepName,
+                                                                          data: (object)jobHookData));
+                    }
+
                     preJobSteps.AddRange(prepareResult.ContainerSetupSteps);
 
                     // Add start-container steps, record and stop-container steps
@@ -337,6 +353,18 @@ namespace GitHub.Runner.Worker
                         }
                     }
 
+                    // Register Job Completed hook if the variable is set
+                    var completedHookPath = Environment.GetEnvironmentVariable("ACTIONS_RUNNER_HOOK_JOB_COMPLETED");
+                    if (!string.IsNullOrEmpty(completedHookPath))
+                    {
+                        var hookProvider = HostContext.GetService<IJobHookProvider>();
+                        var jobHookData = new JobHookData(ActionRunStage.Post, completedHookPath);
+                        jobContext.RegisterPostJobStep(new JobExtensionRunner(runAsync: hookProvider.RunHook,
+                                                                          condition: $"{PipelineTemplateConstants.Always}()",
+                                                                          displayName: Constants.Hooks.JobCompletedStepName,
+                                                                          data: (object)jobHookData));
+                    }
+
                     List<IStep> steps = new List<IStep>();
                     steps.AddRange(preJobSteps);
                     steps.AddRange(jobSteps);
@@ -406,7 +434,7 @@ namespace GitHub.Runner.Worker
             // create a new timeline record node for 'Finalize job'
             IExecutionContext context = jobContext.CreateChild(Guid.NewGuid(), "Complete job", $"{nameof(JobExtension)}_Final", null, null, ActionRunStage.Post);
             context.StepTelemetry.Type = "runner";
-            context.StepTelemetry.Action = "complete_joh";
+            context.StepTelemetry.Action = "complete_job";
             using (var register = jobContext.CancellationToken.Register(() => { context.CancelToken(); }))
             {
                 try
@@ -646,5 +674,13 @@ namespace GitHub.Runner.Worker
             Trace.Info($"Total accessible running process: {snapshot.Count}.");
             return snapshot;
         }
+
+        private static void ValidateJobContainer(JobContainer container)
+        {
+            if (StringUtil.ConvertToBoolean(Environment.GetEnvironmentVariable(Constants.Variables.Actions.RequireJobContainer)) && container == null)
+            {
+                throw new ArgumentException("Jobs without a job container are forbidden on this runner, please add a 'container:' to your job or contact your self-hosted runner administrator.");
+            }
+        }
     }
 }

src/Runner.Worker/JobHookProvider.cs

@@ -0,0 +1,95 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Threading.Tasks;
+using System.Linq;
+using GitHub.Runner.Common;
+using GitHub.Runner.Common.Util;
+using GitHub.Runner.Sdk;
+using GitHub.Runner.Worker.Handlers;
+
+namespace GitHub.Runner.Worker
+{
+    [ServiceLocator(Default = typeof(JobHookProvider))]
+    public interface IJobHookProvider : IRunnerService
+    {
+        Task RunHook(IExecutionContext executionContext, object data);
+    }
+
+    public class JobHookData
+    {
+        public string Path { get; private set; }
+        public ActionRunStage Stage { get; private set; }
+
+        public JobHookData(ActionRunStage stage, string path)
+        {
+            Path = path;
+            Stage = stage;
+        }
+    }
+
+    public class JobHookProvider : RunnerService, IJobHookProvider
+    {
+        public override void Initialize(IHostContext hostContext)
+        {
+            base.Initialize(hostContext);
+        }
+
+        public async Task RunHook(IExecutionContext executionContext, object data)
+        {
+            // Get Inputs
+            var hookData = data as JobHookData;
+            ArgUtil.NotNull(hookData, nameof(JobHookData));
+
+            var displayName = hookData.Stage == ActionRunStage.Pre ? "job started hook" : "job completed hook";
+            // Log to users so that they know how this step was injected
+            executionContext.Output($"A {displayName} has been configured by the self-hosted runner administrator");
+
+            // Validate script file.
+            if (!File.Exists(hookData.Path))
+            {
+                throw new FileNotFoundException("File doesn't exist");
+            }
+
+            executionContext.WriteWebhookPayload();
+
+            // Create the handler data.
+            var scriptDirectory = Path.GetDirectoryName(hookData.Path);
+            var stepHost = HostContext.CreateService<IDefaultStepHost>();
+            var prependPath = string.Join(Path.PathSeparator.ToString(), executionContext.Global.PrependPath.Reverse<string>());
+            Dictionary<string, string> inputs = new()
+            {
+                ["path"] = hookData.Path,
+                ["shell"] = HostContext.GetDefaultShellForScript(hookData.Path, prependPath)
+            };
+
+            // Create the handler
+            var handlerFactory = HostContext.GetService<IHandlerFactory>();
+            var handler = handlerFactory.Create(
+                            executionContext,
+                            action: null,
+                            stepHost,
+                            new ScriptActionExecutionData(),
+                            inputs,
+                            environment: new Dictionary<string, string>(VarUtil.EnvironmentVariableKeyComparer),
+                            executionContext.Global.Variables,
+                            actionDirectory: scriptDirectory,
+                            localActionContainerSetupSteps: null);
+            handler.PrepareExecution(hookData.Stage);
+
+            // Setup file commands
+            var fileCommandManager = HostContext.CreateService<IFileCommandManager>();
+            fileCommandManager.InitializeFiles(executionContext, null);
+
+            // Run the step and process the file commands
+            try
+            {
+                await handler.RunAsync(hookData.Stage);
+            }
+            finally
+            {
+                fileCommandManager.ProcessFiles(executionContext, executionContext.Global.Container);
+            }
+        }
+    }
+}

src/Runner.Worker/JobRunner.cs

@@ -6,6 +6,7 @@ using System.Net.Http;
 using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
+using GitHub.DistributedTask.Pipelines.ContextData;
 using GitHub.DistributedTask.WebApi;
 using GitHub.Runner.Common;
 using GitHub.Runner.Common.Util;
@@ -257,6 +258,12 @@ namespace GitHub.Runner.Worker
                 }
             }
 
+            if (jobContext.JobContext.ContainsKey("Node12ActionsWarnings"))
+            {
+                var actions = string.Join(", ", jobContext.JobContext["Node12ActionsWarnings"].AssertArray("Node12ActionsWarnings").Select(action => action.ToString()));
+                jobContext.Warning(string.Format(Constants.Runner.Node12DetectedAfterEndOfLife, actions));
+            }
+
             try
             {
                 await ShutdownQueue(throwOnFailure: true);

src/Runner.Worker/Runner.Worker.csproj

@@ -3,7 +3,7 @@
   <PropertyGroup>
     <TargetFramework>net6.0</TargetFramework>
     <OutputType>Exe</OutputType>
-    <RuntimeIdentifiers>win-x64;win-x86;linux-x64;linux-arm64;linux-arm;osx-x64</RuntimeIdentifiers>
+    <RuntimeIdentifiers>win-x64;win-x86;linux-x64;linux-arm64;linux-arm;osx-x64;osx-arm64</RuntimeIdentifiers>
     <TargetLatestRuntimePatch>true</TargetLatestRuntimePatch>
     <NoWarn>NU1701;NU1603</NoWarn>
     <Version>$(Version)</Version>

src/Runner.Worker/StepsRunner.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
@@ -111,6 +112,7 @@ namespace GitHub.Runner.Worker
                         foreach (var env in actionEnvironment)
                         {
                             envContext[env.Key] = new StringContextData(env.Value ?? string.Empty);
+                            step.ExecutionContext.StepEnvironmentOverrides.Add(env.Key);
                         }
                     }
                     catch (Exception ex)
@@ -133,8 +135,10 @@ namespace GitHub.Runner.Worker
                             // Test the condition again. The job was cancelled after the condition was originally evaluated.
                             jobCancelRegister = jobContext.CancellationToken.Register(() =>
                             {
-                                // Mark job as cancelled
-                                jobContext.Result = TaskResult.Canceled;
+                                // Mark job as Cancelled or Failed depending on HostContext shutdown token's cancellation
+                                jobContext.Result = HostContext.RunnerShutdownToken.IsCancellationRequested
+                                                    ? TaskResult.Failed
+                                                    : TaskResult.Canceled;
                                 jobContext.JobContext.Status = jobContext.Result?.ToActionResult();
 
                                 step.ExecutionContext.Debug($"Re-evaluate condition on job cancellation for step: '{step.DisplayName}'.");
@@ -172,8 +176,10 @@ namespace GitHub.Runner.Worker
                         {
                             if (jobContext.Result != TaskResult.Canceled)
                             {
-                                // Mark job as cancelled
-                                jobContext.Result = TaskResult.Canceled;
+                                // Mark job as Cancelled or Failed depending on HostContext shutdown token's cancellation
+                                jobContext.Result = HostContext.RunnerShutdownToken.IsCancellationRequested
+                                    ? TaskResult.Failed
+                                    : TaskResult.Canceled;
                                 jobContext.JobContext.Status = jobContext.Result?.ToActionResult();
                             }
                         }
@@ -319,29 +325,8 @@ namespace GitHub.Runner.Worker
                 step.ExecutionContext.Result = TaskResultUtil.MergeTaskResults(step.ExecutionContext.Result, step.ExecutionContext.CommandResult.Value);
             }
 
-            // Fixup the step result if ContinueOnError
-            if (step.ExecutionContext.Result == TaskResult.Failed)
-            {
-                var continueOnError = false;
-                try
-                {
-                    continueOnError = templateEvaluator.EvaluateStepContinueOnError(step.ContinueOnError, step.ExecutionContext.ExpressionValues, step.ExecutionContext.ExpressionFunctions);
-                }
-                catch (Exception ex)
-                {
-                    Trace.Info("The step failed and an error occurred when attempting to determine whether to continue on error.");
-                    Trace.Error(ex);
-                    step.ExecutionContext.Error("The step failed and an error occurred when attempting to determine whether to continue on error.");
-                    step.ExecutionContext.Error(ex);
-                }
+            step.ExecutionContext.ApplyContinueOnError(step.ContinueOnError);
 
-                if (continueOnError)
-                {
-                    step.ExecutionContext.Outcome = step.ExecutionContext.Result;
-                    step.ExecutionContext.Result = TaskResult.Succeeded;
-                    Trace.Info($"Updated step result (continue on error)");
-                }
-            }
             Trace.Info($"Step result: {step.ExecutionContext.Result}");
 
             // Complete the step context

src/Runner.Worker/action_yaml.json

@@ -129,9 +129,10 @@
                         "required": true
                     },
                     "env": "step-env",
+                    "continue-on-error": "boolean-steps-context",
                     "working-directory": "string-steps-context",
                     "shell": {
-                        "type": "non-empty-string",
+                        "type": "string-steps-context",
                         "required": true
                     }
                 }
@@ -147,6 +148,7 @@
                         "type": "non-empty-string",
                         "required": true
                     },
+                    "continue-on-error": "boolean-steps-context",
                     "with": "step-with",
                     "env": "step-env"
                 }
@@ -201,6 +203,20 @@
             ],
             "string": {}
         },
+        "boolean-steps-context": {
+            "context": [
+                "github",
+                "inputs",
+                "strategy",
+                "matrix",
+                "steps",
+                "job",
+                "runner",
+                "env",
+                "hashFiles(1,255)"
+            ],
+            "boolean": {}
+        },
         "step-env": {
             "context": [
                 "github",

src/Sdk/Common/Common/ClientStorage/VssFileStorage.cs

@@ -23,7 +23,6 @@ namespace GitHub.Services.Common.ClientStorage
         private readonly string m_filePath;
         private readonly VssFileStorageReader m_reader;
         private readonly IVssClientStorageWriter m_writer;
-
         private const char c_defaultPathSeparator = '\\';
         private const bool c_defaultIgnoreCaseInPaths = false;
 
@@ -192,7 +191,7 @@ namespace GitHub.Services.Common.ClientStorage
                 // Windows Impersonation is being used.
 
                 // Check to see if we can find the user's local application data directory.
-                string subDir = "GitHub\\ActionsService";
+                string subDir = Path.Combine("GitHub", "ActionsService");
                 string path = Environment.GetEnvironmentVariable("localappdata");
                 SafeGetFolderPath(Environment.SpecialFolder.LocalApplicationData);
                 if (string.IsNullOrEmpty(path))

src/Sdk/Common/Common/Diagnostics/VssHttpEventSource.cs

@@ -351,6 +351,18 @@ namespace GitHub.Services.Common.Diagnostics
             }
         }
 
+        [NonEvent]
+        public void AuthenticationFailedOnFirstRequest(
+            VssTraceActivity activity,
+            HttpResponseMessage response)
+        {
+            if (IsEnabled())
+            {
+                SetActivityId(activity);
+                WriteMessageEvent((Int32)response.StatusCode, response.Headers.ToString(), this.AuthenticationFailedOnFirstRequest);
+            }
+        }
+
         [NonEvent]
         public void IssuedTokenProviderCreated(
             VssTraceActivity activity,
@@ -813,7 +825,7 @@ namespace GitHub.Services.Common.Diagnostics
         [Event(31, Keywords = Keywords.Authentication, Level = EventLevel.Warning, Task = Tasks.Authentication, Opcode = EventOpcode.Info, Message = "Retrieving an AAD auth token took a long time ({0} seconds)")]
         public void AuthorizationDelayed(string timespan)
         {
-            if(IsEnabled(EventLevel.Warning, Keywords.Authentication))
+            if (IsEnabled(EventLevel.Warning, Keywords.Authentication))
             {
                 WriteEvent(31, timespan);
             }
@@ -828,6 +840,17 @@ namespace GitHub.Services.Common.Diagnostics
             }
         }
 
+        [Event(33, Keywords = Keywords.Authentication, Level = EventLevel.Verbose, Task = Tasks.HttpRequest, Message = "Authentication failed on first request with status code {0}.%n{1}")]
+        private void AuthenticationFailedOnFirstRequest(
+            Int32 statusCode,
+            String headers)
+        {
+            if (IsEnabled(EventLevel.Verbose, Keywords.Authentication))
+            {
+                WriteEvent(33, statusCode, headers);
+            }
+        }
+
         /// <summary>
         /// Sets the activity ID of the current thread.
         /// </summary>

src/Sdk/Common/Common/VssHttpMessageHandler.cs

@@ -251,7 +251,14 @@ namespace GitHub.Services.Common
 
                         // Invalidate the token and ensure that we have the correct token provider for the challenge
                         // which we just received
-                        VssHttpEventSource.Log.AuthenticationFailed(traceActivity, response);
+                        if (retries < m_maxAuthRetries)
+                        {
+                            VssHttpEventSource.Log.AuthenticationFailed(traceActivity, response);
+                        }
+                        else
+                        {
+                            VssHttpEventSource.Log.AuthenticationFailedOnFirstRequest(traceActivity, response);
+                        }
 
                         if (provider != null)
                         {

src/Sdk/DTPipelines/Pipelines/RunnerShutdownMessage.cs

@@ -0,0 +1,39 @@
+using System;
+using System.Runtime.Serialization;
+using GitHub.Services.WebApi;
+using Newtonsoft.Json;
+
+namespace GitHub.DistributedTask.Pipelines
+{
+    [DataContract]
+    public sealed class HostedRunnerShutdownMessage
+    {
+        public static readonly String MessageType = "RunnerShutdown";
+
+        [JsonConstructor]
+        internal HostedRunnerShutdownMessage()
+        {
+        }
+
+        public HostedRunnerShutdownMessage(String reason)
+        {
+            this.Reason = reason;
+        }
+
+        [DataMember]
+        public String Reason
+        {
+            get;
+            private set;
+        }
+
+        public WebApi.TaskAgentMessage GetAgentMessage()
+        {
+            return new WebApi.TaskAgentMessage
+            {
+                Body = JsonUtility.ToString(this),
+                MessageType = HostedRunnerShutdownMessage.MessageType,
+            };
+        }
+    }
+}

src/Sdk/DTWebApi/WebApi/ActionsStepTelemetry.cs

@@ -56,5 +56,8 @@ namespace GitHub.DistributedTask.WebApi
 
         [DataMember(EmitDefaultValue = false)]
         public int? ExecutionTimeInSeconds { get; set; }
+
+        [DataMember(EmitDefaultValue = false)]
+        public string ContainerHookData { get; set; }
     }
 }

src/Sdk/DTWebApi/WebApi/JobRequestMessageTypes.cs

@@ -5,5 +5,6 @@ namespace GitHub.DistributedTask.WebApi
     public static class JobRequestMessageTypes
     {
         public const String PipelineAgentJobRequest = "PipelineAgentJobRequest";
+        public const String RunnerJobRequest = "RunnerJobRequest";
     }
 }

src/Sdk/DTWebApi/WebApi/TaskAgentHttpClient.cs

@@ -141,6 +141,24 @@ namespace GitHub.DistributedTask.WebApi
             return ReplaceAgentAsync(poolId, agent.Id, agent, userState, cancellationToken);
         }
 
+        public Task<Pipelines.AgentJobRequestMessage> GetJobMessageAsync(
+            string messageId,
+            object userState = null,
+            CancellationToken cancellationToken = default)
+        {
+            HttpMethod httpMethod = new HttpMethod("GET");
+            Guid locationId = new Guid("25adab70-1379-4186-be8e-b643061ebe3a");
+            object routeValues = new { messageId = messageId };
+
+            return SendAsync<Pipelines.AgentJobRequestMessage>(
+                httpMethod,
+                locationId,
+                routeValues: routeValues,
+                version: new ApiResourceVersion(6.0, 1),
+                userState: userState,
+                cancellationToken: cancellationToken);
+        }
+
         protected Task<T> SendAsync<T>(
             HttpMethod method,
             Guid locationId,

src/Sdk/PipelinesWebApi/UnknownEnumJsonConverter.cs

@@ -2,6 +2,7 @@
 using System.Linq;
 using Newtonsoft.Json;
 using Newtonsoft.Json.Converters;
+using Newtonsoft.Json.Serialization;
 
 namespace GitHub.Actions.Pipelines.WebApi
 {
@@ -9,7 +10,7 @@ namespace GitHub.Actions.Pipelines.WebApi
     {
         public UnknownEnumJsonConverter()
         {
-            this.CamelCaseText = true;
+            this.NamingStrategy = new CamelCaseNamingStrategy();
         }
 
         public override bool CanConvert(Type objectType)

src/Sdk/Sdk.csproj

@@ -3,7 +3,7 @@
     <PropertyGroup>
         <TargetFramework>net6.0</TargetFramework>
         <OutputType>Library</OutputType>
-        <RuntimeIdentifiers>win-x64;win-x86;linux-x64;linux-arm64;linux-arm;osx-x64</RuntimeIdentifiers>
+        <RuntimeIdentifiers>win-x64;win-x86;linux-x64;linux-arm64;linux-arm;osx-x64;osx-arm64</RuntimeIdentifiers>
         <TargetLatestRuntimePatch>true</TargetLatestRuntimePatch>
         <NoWarn>NU1701;NU1603</NoWarn>
         <Version>$(Version)</Version>
@@ -14,7 +14,7 @@
 
     <ItemGroup>
         <PackageReference Include="Microsoft.Win32.Registry" Version="4.4.0" />
-        <PackageReference Include="Newtonsoft.Json" Version="11.0.2" />
+        <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
         <PackageReference Include="Microsoft.AspNet.WebApi.Client" Version="5.2.4" />
         <PackageReference Include="System.IdentityModel.Tokens.Jwt" Version="5.2.1" />
         <PackageReference Include="System.Security.Cryptography.Cng" Version="4.4.0" />

src/Sdk/WebApi/WebApi/VssJsonMediaTypeFormatter.cs

@@ -84,7 +84,7 @@ namespace GitHub.Services.WebApi
             if (!enumsAsNumbers)
             {
                 // Serialze enums as camelCased string values
-                this.SerializerSettings.Converters.Add(new StringEnumConverter { CamelCaseText = true });
+                this.SerializerSettings.Converters.Add(new StringEnumConverter { NamingStrategy = new CamelCaseNamingStrategy() });
             }
 
             if (useMsDateFormat)

src/Test/L0/ConstantGenerationL0.cs

@@ -19,7 +19,8 @@ namespace GitHub.Runner.Common.Tests
                 "linux-x64",
                 "linux-arm",
                 "linux-arm64",
-                "osx-x64"
+                "osx-x64",
+                "osx-arm64"
             };
 
             Assert.True(BuildConstants.Source.CommitHash.Length == 40, $"CommitHash should be SHA-1 hash {BuildConstants.Source.CommitHash}");

src/Test/L0/Listener/CommandSettingsL0.cs

@@ -708,33 +708,85 @@ namespace GitHub.Runner.Common.Tests
             }
         }
 
-        [Fact]
+        [Theory]
+        [InlineData("configure", "once")]
+        [InlineData("remove", "disableupdate")]
+        [InlineData("remove", "ephemeral")]
+        [InlineData("remove", "once")]
+        [InlineData("remove", "replace")]
+        [InlineData("remove", "runasservice")]
+        [InlineData("remove", "unattended")]
+        [InlineData("run", "disableupdate")]
+        [InlineData("run", "ephemeral")]
+        [InlineData("run", "replace")]
+        [InlineData("run", "runasservice")]
+        [InlineData("run", "unattended")]
+        [InlineData("warmup", "disableupdate")]      
+        [InlineData("warmup", "ephemeral")]     
+        [InlineData("warmup", "once")]   
+        [InlineData("warmup", "replace")]      
+        [InlineData("warmup", "runasservice")]   
+        [InlineData("warmup", "unattended")]
         [Trait("Level", "L0")]
         [Trait("Category", nameof(CommandSettings))]
-        public void ValidateFlags()
+        public void ValidateInvalidFlagCommandCombination(string validCommand, string flag)
         {
             using (TestHostContext hc = CreateTestContext())
             {
                 // Arrange.
-                var command = new CommandSettings(hc, args: new string[] { "--badflag" });
+                var command = new CommandSettings(hc, args: new string[] { validCommand, $"--{flag}" });
 
                 // Assert.
-                Assert.Contains("badflag", command.Validate());
+                Assert.Contains(flag, command.Validate());
             }
         }
 
-        [Fact]
+        [Theory]
+        [InlineData("remove", "auth", "bar arg value")]
+        [InlineData("remove", "labels", "bar arg value")]
+        [InlineData("remove", "monitorsocketaddress", "bar arg value")]
+        [InlineData("remove", "name", "bar arg value")]
+        [InlineData("remove", "runnergroup", "bar arg value")]
+        [InlineData("remove", "url", "bar arg value")]
+        [InlineData("remove", "username", "bar arg value")]
+        [InlineData("remove", "windowslogonaccount", "bar arg value")]
+        [InlineData("remove", "windowslogonpassword", "bar arg value")]
+        [InlineData("remove", "work", "bar arg value")]
+        [InlineData("run", "auth", "bad arg value")]
+        [InlineData("run", "labels", "bad arg value")]
+        [InlineData("run", "monitorsocketaddress", "bad arg value")]
+        [InlineData("run", "name", "bad arg value")]
+        [InlineData("run", "pat", "bad arg value")]
+        [InlineData("run", "runnergroup", "bad arg value")]
+        [InlineData("run", "token", "bad arg value")]
+        [InlineData("run", "url", "bad arg value")]
+        [InlineData("run", "username", "bad arg value")]
+        [InlineData("run", "windowslogonaccount", "bad arg value")]
+        [InlineData("run", "windowslogonpassword", "bad arg value")]
+        [InlineData("run", "work", "bad arg value")]
+        [InlineData("warmup", "auth", "bad arg value")]
+        [InlineData("warmup", "labels", "bad arg value")]
+        [InlineData("warmup", "monitorsocketaddress", "bad arg value")]
+        [InlineData("warmup", "name", "bad arg value")]
+        [InlineData("warmup", "pat", "bad arg value")]
+        [InlineData("warmup", "runnergroup", "bad arg value")]
+        [InlineData("warmup", "token", "bad arg value")]
+        [InlineData("warmup", "url", "bad arg value")]
+        [InlineData("warmup", "username", "bad arg value")]
+        [InlineData("warmup", "windowslogonaccount", "bad arg value")]
+        [InlineData("warmup", "windowslogonpassword", "bad arg value")]
+        [InlineData("warmup", "work", "bad arg value")]
         [Trait("Level", "L0")]
         [Trait("Category", nameof(CommandSettings))]
-        public void ValidateArgs()
+        public void ValidateInvalidArgCommandCombination(string validCommand, string arg, string argValue)
         {
             using (TestHostContext hc = CreateTestContext())
             {
                 // Arrange.
-                var command = new CommandSettings(hc, args: new string[] { "--badargname", "bad arg value" });
+                var command = new CommandSettings(hc, args: new string[] { validCommand, $"--{arg}", argValue });
 
                 // Assert.
-                Assert.Contains("badargname", command.Validate());
+                Assert.Contains(arg, command.Validate());
             }
         }
 
@@ -758,6 +810,73 @@ namespace GitHub.Runner.Common.Tests
             }
         }
 
+        [Theory]
+        [InlineData("configure", "help")]
+        [InlineData("configure", "version")]
+        [InlineData("configure", "commit")]
+        [InlineData("configure", "check")]
+        [InlineData("configure", "disableupdate")]
+        [InlineData("configure", "ephemeral")]
+        [InlineData("configure", "replace")]
+        [InlineData("configure", "runasservice")]
+        [InlineData("configure", "unattended")]
+        [InlineData("remove", "help")]
+        [InlineData("remove", "version")]
+        [InlineData("remove", "commit")]
+        [InlineData("remove", "check")]
+        [InlineData("run", "help")]
+        [InlineData("run", "version")]
+        [InlineData("run", "commit")]
+        [InlineData("run", "check")]
+        [InlineData("run", "once")]
+        [InlineData("warmup", "help")]
+        [InlineData("warmup", "version")]
+        [InlineData("warmup", "commit")]
+        [InlineData("warmup", "check")]
+        [Trait("Level", "L0")]
+        [Trait("Category", nameof(CommandSettings))]
+        public void ValidateGoodFlagCommandCombination(string validCommand, string flag)
+        {
+            using (TestHostContext hc = CreateTestContext())
+            {
+                // Arrange.
+                var command = new CommandSettings(hc, args: new string[] { validCommand, $"--{flag}" });
+
+                // Assert.
+                Assert.True(command.Validate().Count == 0);
+            }
+        }
+
+        [Theory]
+        [InlineData("configure", "auth", "good arg value")]
+        [InlineData("configure", "labels", "good arg value")]
+        [InlineData("configure", "monitorsocketaddress", "good arg value")]
+        [InlineData("configure", "name", "good arg value")]
+        [InlineData("configure", "pat", "good arg value")]
+        [InlineData("configure", "runnergroup", "good arg value")]
+        [InlineData("configure", "token", "good arg value")]
+        [InlineData("configure", "url", "good arg value")]
+        [InlineData("configure", "username", "good arg value")]
+        [InlineData("configure", "windowslogonaccount", "good arg value")]
+        [InlineData("configure", "windowslogonpassword", "good arg value")]
+        [InlineData("configure", "work", "good arg value")]
+        [InlineData("remove", "token", "good arg value")]
+        [InlineData("remove", "pat", "good arg value")]
+        [InlineData("run", "startuptype", "good arg value")]
+        [Trait("Level", "L0")]
+        [Trait("Category", nameof(CommandSettings))]
+        public void ValidateGoodArgCommandCombination(string validCommand, string arg, string argValue)
+        {
+            using (TestHostContext hc = CreateTestContext())
+            {
+                // Arrange.
+                var command = new CommandSettings(hc, args: new string[] { validCommand, $"--{arg}", argValue });
+
+                // Assert.
+                Assert.True(command.Validate().Count == 0);
+            }
+        }
+
         private TestHostContext CreateTestContext([CallerMemberName] string testName = "")
         {
             TestHostContext hc = new TestHostContext(this, testName);

src/Test/L0/Listener/SelfUpdaterL0.cs

@@ -1,4 +1,5 @@
-using System;
+#if !(OS_OSX && ARM64)
+using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
@@ -50,9 +51,9 @@ namespace GitHub.Runner.Common.Tests.Listener
                 var response = await client.SendAsync(new HttpRequestMessage(HttpMethod.Get, "https://github.com/actions/runner/releases/latest"));
                 if (response.StatusCode == System.Net.HttpStatusCode.Redirect)
                 {
-                    var redirect = await response.Content.ReadAsStringAsync();
+                    var redirectUrl = response.Headers.Location.ToString();
                     Regex regex = new Regex(@"/runner/releases/tag/v(?<version>\d+\.\d+\.\d+)");
-                    var match = regex.Match(redirect);
+                    var match = regex.Match(redirectUrl);
                     if (match.Success)
                     {
                         latestVersion = match.Groups["version"].Value;
@@ -63,6 +64,10 @@ namespace GitHub.Runner.Common.Tests.Listener
                         _packageUrl = $"https://github.com/actions/runner/releases/download/v{latestVersion}/actions-runner-{BuildConstants.RunnerPackage.PackageName}-{latestVersion}.zip";
 #endif
                     }
+                    else
+                    {
+                        throw new Exception("The latest runner version could not be determined so a download URL could not be generated for it. Please check the location header of the redirect response of 'https://github.com/actions/runner/releases/latest'");
+                    }
                 }
             }
 
@@ -791,3 +796,4 @@ namespace GitHub.Runner.Common.Tests.Listener
         }
     }
 }
+#endif

src/Test/L0/PackagesTrimL0.cs

@@ -166,9 +166,9 @@ namespace GitHub.Runner.Common.Tests
                 string binDir = Path.Combine(TestUtil.GetSrcPath(), @"../_layout/bin");
 
 #if OS_WINDOWS
-                string node = Path.Combine(TestUtil.GetSrcPath(), @"..\_layout\externals\node12\bin\node");
+                string node = Path.Combine(TestUtil.GetSrcPath(), @"..\_layout\externals\node16\bin\node");
 #else
-                string node = Path.Combine(TestUtil.GetSrcPath(), @"../_layout/externals/node12/bin/node");
+                string node = Path.Combine(TestUtil.GetSrcPath(), @"../_layout/externals/node16/bin/node");
 #endif
                 string hashFilesScript = Path.Combine(binDir, "hashFiles");
                 var hashResult = string.Empty;
@@ -228,9 +228,9 @@ namespace GitHub.Runner.Common.Tests
                 string binDir = Path.Combine(TestUtil.GetSrcPath(), @"../_layout/bin");
 
 #if OS_WINDOWS
-                string node = Path.Combine(TestUtil.GetSrcPath(), @"..\_layout\externals\node12\bin\node");
+                string node = Path.Combine(TestUtil.GetSrcPath(), @"..\_layout\externals\node16\bin\node");
 #else
-                string node = Path.Combine(TestUtil.GetSrcPath(), @"../_layout/externals/node12/bin/node");
+                string node = Path.Combine(TestUtil.GetSrcPath(), @"../_layout/externals/node16/bin/node");
 #endif
                 string hashFilesScript = Path.Combine(binDir, "hashFiles");
                 var hashResult = string.Empty;

src/Test/L0/ProcessExtensionL0.cs

@@ -27,9 +27,9 @@ namespace GitHub.Runner.Common.Tests
                 try
                 {
 #if OS_WINDOWS
-                    string node = Path.Combine(TestUtil.GetSrcPath(), @"..\_layout\externals\node12\bin\node");
+                    string node = Path.Combine(TestUtil.GetSrcPath(), @"..\_layout\externals\node16\bin\node");
 #else
-                    string node = Path.Combine(TestUtil.GetSrcPath(), @"../_layout/externals/node12/bin/node");
+                    string node = Path.Combine(TestUtil.GetSrcPath(), @"../_layout/externals/node16/bin/node");
                     hc.EnqueueInstance<IProcessInvoker>(new ProcessInvokerWrapper());
 #endif
                     var startInfo = new ProcessStartInfo(node, "-e \"setTimeout(function(){{}}, 15 * 1000);\"");

src/Test/L0/ServiceInterfacesL0.cs

@@ -2,6 +2,7 @@
 using GitHub.Runner.Listener.Check;
 using GitHub.Runner.Listener.Configuration;
 using GitHub.Runner.Worker;
+using GitHub.Runner.Worker.Container.ContainerHooks;
 using GitHub.Runner.Worker.Handlers;
 using System;
 using System.Collections.Generic;
@@ -68,7 +69,8 @@ namespace GitHub.Runner.Common.Tests
                 typeof(IStep),
                 typeof(IStepHost),
                 typeof(IDiagnosticLogManager),
-                typeof(IEnvironmentContextData)
+                typeof(IEnvironmentContextData),
+                typeof(IHookArgs),                
             };
             Validate(
                 assembly: typeof(IStepsRunner).GetTypeInfo().Assembly,

src/Test/L0/Worker/ActionRunnerL0.cs

@@ -118,7 +118,7 @@ namespace GitHub.Runner.Common.Tests.Worker
             await _actionRunner.RunAsync();
 
             //Assert
-            _ec.Verify(x => x.SetGitHubContext("event_path", Path.Combine(_hc.GetDirectory(WellKnownDirectory.Temp), "_github_workflow", "event.json")), Times.Once);
+            _ec.Verify(x => x.WriteWebhookPayload(), Times.Once);
         }
 
         [Fact]

src/Test/L0/Worker/CreateStepSummaryCommandL0.cs

@@ -25,23 +25,6 @@ namespace GitHub.Runner.Common.Tests.Worker
         private CreateStepSummaryCommand _createStepCommand;
         private ITraceWriter _trace;
 
-        [Fact]
-        [Trait("Level", "L0")]
-        [Trait("Category", "Worker")]
-        public void CreateStepSummaryCommand_FeatureDisabled()
-        {
-            using (var hostContext = Setup(featureFlagState: "false"))
-            {
-                var stepSummaryFile = Path.Combine(_rootDirectory, "feature-off");
-                
-                _createStepCommand.ProcessCommand(_executionContext.Object, stepSummaryFile, null);
-                _jobExecutionContext.Complete();
-
-                _jobServerQueue.Verify(x => x.QueueFileUpload(It.IsAny<Guid>(), It.IsAny<Guid>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<string>(), It.IsAny<bool>()), Times.Never());
-                Assert.Equal(0, _issues.Count);
-            }
-        }
-
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
@@ -117,7 +100,7 @@ namespace GitHub.Runner.Common.Tests.Worker
             using (var hostContext = Setup())
             {
                 var stepSummaryFile = Path.Combine(_rootDirectory, "empty-file");
-                File.WriteAllBytes(stepSummaryFile, new byte[128 * 1024 + 1]);
+                File.WriteAllBytes(stepSummaryFile, new byte[CreateStepSummaryCommand.AttachmentSizeLimit + 1]);
 
                 _createStepCommand.ProcessCommand(_executionContext.Object, stepSummaryFile, null);
                 _jobExecutionContext.Complete();
@@ -199,7 +182,7 @@ namespace GitHub.Runner.Common.Tests.Worker
             File.WriteAllText(path, contentStr, encoding);
         }
 
-        private TestHostContext Setup([CallerMemberName] string name = "", string featureFlagState = "true")
+        private TestHostContext Setup([CallerMemberName] string name = "")
         {
             var hostContext = new TestHostContext(this, name);
 
@@ -241,7 +224,6 @@ namespace GitHub.Runner.Common.Tests.Worker
             _variables = new Variables(hostContext, new Dictionary<string, VariableValue>
                 {
                     { "MySecretName", new VariableValue("My secret value", true) },
-                    { "DistributedTask.UploadStepSummary", featureFlagState },
                 });
 
             // Directory for test data

src/Test/L0/Worker/ExecutionContextL0.cs

@@ -6,8 +6,11 @@ using System.Threading;
 using GitHub.DistributedTask.Pipelines.ContextData;
 using GitHub.DistributedTask.WebApi;
 using GitHub.Runner.Worker;
+using GitHub.Runner.Worker.Container;
+using GitHub.Runner.Worker.Handlers;
 using Moq;
 using Xunit;
+using GitHub.DistributedTask.ObjectTemplating.Tokens;
 using Pipelines = GitHub.DistributedTask.Pipelines;
 
 namespace GitHub.Runner.Common.Tests.Worker
@@ -90,6 +93,62 @@ namespace GitHub.Runner.Common.Tests.Worker
             }
         }
 
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Worker")]
+        public void ApplyContinueOnError_CheckResultAndOutcome()
+        {
+            using (TestHostContext hc = CreateTestContext())
+            {
+                // Arrange: Create a job request message.
+                TaskOrchestrationPlanReference plan = new TaskOrchestrationPlanReference();
+                TimelineReference timeline = new TimelineReference();
+                Guid jobId = Guid.NewGuid();
+                string jobName = "some job name";
+                var jobRequest = new Pipelines.AgentJobRequestMessage(plan, timeline, jobId, jobName, jobName, null, null, null, new Dictionary<string, VariableValue>(), new List<MaskHint>(), new Pipelines.JobResources(), new Pipelines.ContextData.DictionaryContextData(), new Pipelines.WorkspaceOptions(), new List<Pipelines.ActionStep>(), null, null, null, null);
+                jobRequest.Resources.Repositories.Add(new Pipelines.RepositoryResource()
+                {
+                    Alias = Pipelines.PipelineConstants.SelfAlias,
+                    Id = "github",
+                    Version = "sha1"
+                });
+                jobRequest.ContextData["github"] = new Pipelines.ContextData.DictionaryContextData();
+                jobRequest.Variables["ACTIONS_STEP_DEBUG"] = "true";
+
+                // Arrange: Setup the paging logger.
+                var pagingLogger = new Mock<IPagingLogger>();
+                var jobServerQueue = new Mock<IJobServerQueue>();
+                jobServerQueue.Setup(x => x.QueueTimelineRecordUpdate(It.IsAny<Guid>(), It.IsAny<TimelineRecord>()));
+                jobServerQueue.Setup(x => x.QueueWebConsoleLine(It.IsAny<Guid>(), It.IsAny<string>(), It.IsAny<long>())).Callback((Guid id, string msg, long? lineNumber) => { hc.GetTrace().Info(msg); });
+
+                hc.EnqueueInstance(pagingLogger.Object);
+                hc.SetSingleton(jobServerQueue.Object);
+
+                var ec = new Runner.Worker.ExecutionContext();
+                ec.Initialize(hc);
+
+                // Act.
+                ec.InitializeJob(jobRequest, CancellationToken.None);
+
+                foreach (var tc in new List<(TemplateToken token, TaskResult result, TaskResult? expectedResult, TaskResult? expectedOutcome)> {
+                (token: new BooleanToken(null, null, null, true), result: TaskResult.Failed, expectedResult: TaskResult.Succeeded, expectedOutcome: TaskResult.Failed),
+                (token: new BooleanToken(null, null, null, true), result: TaskResult.Succeeded, expectedResult: TaskResult.Succeeded, expectedOutcome: null),
+                (token: new BooleanToken(null, null, null, true), result: TaskResult.Canceled, expectedResult: TaskResult.Canceled, expectedOutcome: null),
+                (token: new BooleanToken(null, null, null, false), result: TaskResult.Failed, expectedResult: TaskResult.Failed, expectedOutcome: null),
+                (token: new BooleanToken(null, null, null, false), result: TaskResult.Succeeded, expectedResult: TaskResult.Succeeded, expectedOutcome: null),
+                (token: new BooleanToken(null, null, null, false), result: TaskResult.Canceled, expectedResult: TaskResult.Canceled, expectedOutcome: null),
+            })
+                {
+                    ec.Result = tc.result;
+                    ec.Outcome = null;
+                    ec.ApplyContinueOnError(tc.token);
+                    Assert.Equal(ec.Result, tc.expectedResult);
+                    Assert.Equal(ec.Outcome, tc.expectedOutcome);
+                }
+            }
+        }
+
+
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
@@ -144,6 +203,55 @@ namespace GitHub.Runner.Common.Tests.Worker
             }
         }
 
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Worker")]
+        public void AddIssue_AddStepAndLineNumberInformation()
+        {
+            using (TestHostContext hc = CreateTestContext())
+            {
+
+                TaskOrchestrationPlanReference plan = new TaskOrchestrationPlanReference();
+                TimelineReference timeline = new TimelineReference();
+                Guid jobId = Guid.NewGuid();
+                string jobName = "some job name";
+                var jobRequest = new Pipelines.AgentJobRequestMessage(plan, timeline, jobId, jobName, jobName, null, null, null, new Dictionary<string, VariableValue>(), new List<MaskHint>(), new Pipelines.JobResources(), new Pipelines.ContextData.DictionaryContextData(), new Pipelines.WorkspaceOptions(), new List<Pipelines.ActionStep>(), null, null, null, null);
+                jobRequest.Resources.Repositories.Add(new Pipelines.RepositoryResource()
+                {
+                    Alias = Pipelines.PipelineConstants.SelfAlias,
+                    Id = "github",
+                    Version = "sha1"
+                });
+                jobRequest.ContextData["github"] = new Pipelines.ContextData.DictionaryContextData();
+
+                // Arrange: Setup the paging logger.
+                var pagingLogger = new Mock<IPagingLogger>();
+                var pagingLogger2 = new Mock<IPagingLogger>();
+                var jobServerQueue = new Mock<IJobServerQueue>();
+                jobServerQueue.Setup(x => x.QueueTimelineRecordUpdate(It.IsAny<Guid>(), It.IsAny<TimelineRecord>()));
+
+                hc.EnqueueInstance(pagingLogger.Object);
+                hc.EnqueueInstance(pagingLogger2.Object);
+                hc.SetSingleton(jobServerQueue.Object);
+
+                var ec = new Runner.Worker.ExecutionContext();
+                ec.Initialize(hc);
+                ec.InitializeJob(jobRequest, CancellationToken.None);
+                ec.Start();
+
+                var embeddedStep = ec.CreateChild(Guid.NewGuid(), "action_1_pre", "action_1_pre", null, null, ActionRunStage.Main, isEmbedded: true);
+                embeddedStep.Start();
+
+                embeddedStep.AddIssue(new Issue() { Type = IssueType.Error, Message = "error annotation that should have step and line number information" });
+                embeddedStep.AddIssue(new Issue() { Type = IssueType.Warning, Message = "warning annotation that should have step and line number information" });
+                embeddedStep.AddIssue(new Issue() { Type = IssueType.Notice, Message = "notice annotation that should have step and line number information" });
+
+                jobServerQueue.Verify(x => x.QueueTimelineRecordUpdate(It.IsAny<Guid>(), It.Is<TimelineRecord>(t => t.Issues.Where(i => i.Data.ContainsKey("stepNumber") && i.Data.ContainsKey("logFileLineNumber") && i.Type == IssueType.Error).Count() == 1)), Times.AtLeastOnce);
+                jobServerQueue.Verify(x => x.QueueTimelineRecordUpdate(It.IsAny<Guid>(), It.Is<TimelineRecord>(t => t.Issues.Where(i => i.Data.ContainsKey("stepNumber") && i.Data.ContainsKey("logFileLineNumber") && i.Type == IssueType.Warning).Count() == 1)), Times.AtLeastOnce);
+                jobServerQueue.Verify(x => x.QueueTimelineRecordUpdate(It.IsAny<Guid>(), It.Is<TimelineRecord>(t => t.Issues.Where(i => i.Data.ContainsKey("stepNumber") && i.Data.ContainsKey("logFileLineNumber") && i.Type == IssueType.Notice).Count() == 1)), Times.AtLeastOnce);
+            }
+        }
+
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
@@ -617,5 +725,149 @@ namespace GitHub.Runner.Common.Tests.Worker
 
             return hc;
         }
+
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Worker")]
+        public void GetExpressionValues_ContainerStepHost()
+        {
+            using (TestHostContext hc = CreateTestContext())
+            {
+                const string source = "/home/username/Projects/work/runner/_layout";
+                var containerInfo = new ContainerInfo();
+                containerInfo.ContainerId = "test";
+
+                containerInfo.AddPathTranslateMapping($"{source}/_work", "/__w");
+                containerInfo.AddPathTranslateMapping($"{source}/_temp", "/__t");
+                containerInfo.AddPathTranslateMapping($"{source}/externals", "/__e");
+
+                containerInfo.AddPathTranslateMapping($"{source}/_work/_temp/_github_home", "/github/home");
+                containerInfo.AddPathTranslateMapping($"{source}/_work/_temp/_github_workflow", "/github/workflow");
+
+                foreach (var v in new List<string>() {
+                    $"{source}/_work",
+                    $"{source}/externals",
+                    $"{source}/_work/_temp",
+                    $"{source}/_work/_actions",
+                    $"{source}/_work/_tool",
+                })
+                {
+                    containerInfo.MountVolumes.Add(new MountVolume(v, containerInfo.TranslateToContainerPath(v)));
+                };
+
+                var stepHost = new ContainerStepHost();
+                stepHost.Container = containerInfo;
+
+                var ec = new Runner.Worker.ExecutionContext();
+                ec.Initialize(hc);
+
+                var inputGithubContext = new GitHubContext();
+                var inputeRunnerContext = new RunnerContext();
+
+                // string context data
+                inputGithubContext["action_path"] = new StringContextData("/home/username/Projects/work/runner/_layout/_work/_actions/owner/composite/main");
+                inputGithubContext["action"] = new StringContextData("__owner_composite");
+                inputGithubContext["api_url"] = new StringContextData("https://api.github.com/custom/path");
+                inputGithubContext["env"] = new StringContextData("/home/username/Projects/work/runner/_layout/_work/_temp/_runner_file_commands/set_env_265698aa-7f38-40f5-9316-5c01a3153672");
+                inputGithubContext["path"] = new StringContextData("/home/username/Projects/work/runner/_layout/_work/_temp/_runner_file_commands/add_path_265698aa-7f38-40f5-9316-5c01a3153672");
+                inputGithubContext["event_path"] = new StringContextData("/home/username/Projects/work/runner/_layout/_work/_temp/_github_workflow/event.json");
+                inputGithubContext["repository"] = new StringContextData("owner/repo-name");
+                inputGithubContext["run_id"] = new StringContextData("2033211332");
+                inputGithubContext["workflow"] = new StringContextData("Name of Workflow");
+                inputGithubContext["workspace"] = new StringContextData("/home/username/Projects/work/runner/_layout/_work/step-order/step-order");
+                inputeRunnerContext["temp"] = new StringContextData("/home/username/Projects/work/runner/_layout/_work/_temp");
+                inputeRunnerContext["tool_cache"] = new StringContextData("/home/username/Projects/work/runner/_layout/_work/_tool");
+
+                // dictionary context data
+                var githubEvent = new DictionaryContextData();
+                githubEvent["inputs"] = null;
+                githubEvent["ref"] = new StringContextData("refs/heads/main");
+                githubEvent["repository"] = new DictionaryContextData();
+                githubEvent["sender"] = new DictionaryContextData();
+                githubEvent["workflow"] = new StringContextData(".github/workflows/composite_step_host_translate.yaml");
+
+                inputGithubContext["event"] = githubEvent;
+
+                ec.ExpressionValues["github"] = inputGithubContext;
+                ec.ExpressionValues["runner"] = inputeRunnerContext;
+
+                var ecExpect = new Runner.Worker.ExecutionContext();
+                ecExpect.Initialize(hc);
+
+                var expectedGithubEvent = new DictionaryContextData();
+                expectedGithubEvent["inputs"] = null;
+                expectedGithubEvent["ref"] = new StringContextData("refs/heads/main");
+                expectedGithubEvent["repository"] = new DictionaryContextData();
+                expectedGithubEvent["sender"] = new DictionaryContextData();
+                expectedGithubEvent["workflow"] = new StringContextData(".github/workflows/composite_step_host_translate.yaml");
+                var expectedGithubContext = new GitHubContext();
+                var expectedRunnerContext = new RunnerContext();
+                expectedGithubContext["action_path"] = new StringContextData("/__w/_actions/owner/composite/main");
+                expectedGithubContext["action"] = new StringContextData("__owner_composite");
+                expectedGithubContext["api_url"] = new StringContextData("https://api.github.com/custom/path");
+                expectedGithubContext["env"] = new StringContextData("/__w/_temp/_runner_file_commands/set_env_265698aa-7f38-40f5-9316-5c01a3153672");
+                expectedGithubContext["path"] = new StringContextData("/__w/_temp/_runner_file_commands/add_path_265698aa-7f38-40f5-9316-5c01a3153672");
+                expectedGithubContext["event_path"] = new StringContextData("/github/workflow/event.json");
+                expectedGithubContext["repository"] = new StringContextData("owner/repo-name");
+                expectedGithubContext["run_id"] = new StringContextData("2033211332");
+                expectedGithubContext["workflow"] = new StringContextData("Name of Workflow");
+                expectedGithubContext["workspace"] = new StringContextData("/__w/step-order/step-order");
+                expectedGithubContext["event"] = expectedGithubEvent;
+                expectedRunnerContext["temp"] = new StringContextData("/__w/_temp");
+                expectedRunnerContext["tool_cache"] = new StringContextData("/__w/_tool");
+
+                ecExpect.ExpressionValues["github"] = expectedGithubContext;
+                ecExpect.ExpressionValues["runner"] = expectedRunnerContext;
+
+                var translatedExpressionValues = ec.GetExpressionValues(stepHost);
+
+                foreach (var contextName in new string[] { "github", "runner" })
+                {
+                    var dict = translatedExpressionValues[contextName].AssertDictionary($"expected context github to be a dictionary");
+                    var expectedExpressionValues = ecExpect.ExpressionValues[contextName].AssertDictionary("expect dict");
+                    foreach (var key in dict.Keys.ToList())
+                    {
+                        if (dict[key] is StringContextData)
+                        {
+                            var expect = dict[key].AssertString("expect string");
+                            var outcome = expectedExpressionValues[key].AssertString("expect string");
+                            Assert.Equal(expect.Value, outcome.Value);
+                        }
+                        else if (dict[key] is DictionaryContextData || dict[key] is CaseSensitiveDictionaryContextData)
+                        {
+                            var expectDict = dict[key].AssertDictionary("expect dict");
+                            var actualDict = expectedExpressionValues[key].AssertDictionary("expect dict");
+                            Assert.True(ExpressionValuesAssertEqual(expectDict, actualDict));
+                        }
+                    }
+                }
+            }
+        }
+
+        private bool ExpressionValuesAssertEqual(DictionaryContextData expect, DictionaryContextData actual)
+        {
+            foreach (var key in expect.Keys.ToList())
+            {
+                if (expect[key] is StringContextData)
+                {
+                    var expectValue = expect[key].AssertString("expect string");
+                    var actualValue = actual[key].AssertString("expect string");
+                    if (expectValue.Equals(actualValue))
+                    {
+                        return false;
+                    }
+                }
+                else if (expect[key] is DictionaryContextData || expect[key] is CaseSensitiveDictionaryContextData)
+                {
+                    var expectDict = expect[key].AssertDictionary("expect dict");
+                    var actualDict = actual[key].AssertDictionary("expect dict");
+                    if (!ExpressionValuesAssertEqual(expectDict, actualDict))
+                    {
+                        return false;
+                    }
+                }
+            }
+            return true;
+        }
     }
 }

src/Test/L0/Worker/JobExtensionL0.cs

@@ -25,6 +25,7 @@ namespace GitHub.Runner.Common.Tests.Worker
         private Mock<IPagingLogger> _logger;
         private Mock<IContainerOperationProvider> _containerProvider;
         private Mock<IDiagnosticLogManager> _diagnosticLogManager;
+        private Mock<IJobHookProvider> _jobHookProvider;
 
         private CancellationTokenSource _tokenSource;
         private TestHostContext CreateTestContext([CallerMemberName] String testName = "")
@@ -40,6 +41,7 @@ namespace GitHub.Runner.Common.Tests.Worker
             _directoryManager = new Mock<IPipelineDirectoryManager>();
             _directoryManager.Setup(x => x.PrepareDirectory(It.IsAny<IExecutionContext>(), It.IsAny<Pipelines.WorkspaceOptions>()))
                              .Returns(new TrackingConfig() { PipelineDirectory = "runner", WorkspaceDirectory = "runner/runner" });
+            _jobHookProvider = new Mock<IJobHookProvider>();
 
             IActionRunner step1 = new ActionRunner();
             IActionRunner step2 = new ActionRunner();
@@ -111,7 +113,9 @@ namespace GitHub.Runner.Common.Tests.Worker
             hc.SetSingleton(_containerProvider.Object);
             hc.SetSingleton(_directoryManager.Object);
             hc.SetSingleton(_diagnosticLogManager.Object);
+            hc.SetSingleton(_jobHookProvider.Object);
             hc.EnqueueInstance<IPagingLogger>(_logger.Object); // JobExecutionContext
+            hc.EnqueueInstance<IPagingLogger>(_logger.Object); // job start hook
             hc.EnqueueInstance<IPagingLogger>(_logger.Object); // Initial Job
             hc.EnqueueInstance<IPagingLogger>(_logger.Object); // step1
             hc.EnqueueInstance<IPagingLogger>(_logger.Object); // step2
@@ -120,6 +124,7 @@ namespace GitHub.Runner.Common.Tests.Worker
             hc.EnqueueInstance<IPagingLogger>(_logger.Object); // step5
             hc.EnqueueInstance<IPagingLogger>(_logger.Object); // prepare1
             hc.EnqueueInstance<IPagingLogger>(_logger.Object); // prepare2
+            hc.EnqueueInstance<IPagingLogger>(_logger.Object); // job complete hook
 
             hc.EnqueueInstance<IActionRunner>(step1);
             hc.EnqueueInstance<IActionRunner>(step2);
@@ -206,6 +211,24 @@ namespace GitHub.Runner.Common.Tests.Worker
             }
         }
 
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Worker")]
+        public async Task JobExtensionBuildFailsWithoutContainerIfRequired()
+        {
+            Environment.SetEnvironmentVariable(Constants.Variables.Actions.RequireJobContainer, "true");
+            using (TestHostContext hc = CreateTestContext())
+            {
+                var jobExtension = new JobExtension();
+                jobExtension.Initialize(hc);
+
+                _actionManager.Setup(x => x.PrepareActionsAsync(It.IsAny<IExecutionContext>(), It.IsAny<IEnumerable<Pipelines.JobStep>>(), It.IsAny<Guid>()))
+                              .Returns(Task.FromResult(new PrepareResult(new List<JobExtensionRunner>() { new JobExtensionRunner(null, "", "prepare1", null), new JobExtensionRunner(null, "", "prepare2", null) }, new Dictionary<Guid, IActionRunner>())));
+
+                await Assert.ThrowsAsync<ArgumentException>(() => jobExtension.InitializeJob(_jobEc, _message));
+            }
+        }
+
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
@@ -348,5 +371,62 @@ namespace GitHub.Runner.Common.Tests.Worker
                 Assert.Equal(TaskResult.Succeeded, _jobEc.Result);
             }
         }
+
+
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Worker")]
+        public async Task EnsurePreAndPostHookStepsIfEnvExists()
+        {
+            Environment.SetEnvironmentVariable("ACTIONS_RUNNER_HOOK_JOB_STARTED", "/foo/bar");
+            Environment.SetEnvironmentVariable("ACTIONS_RUNNER_HOOK_JOB_COMPLETED", "/bar/foo");
+            using (TestHostContext hc = CreateTestContext())
+            {                
+                var jobExtension = new JobExtension();
+                jobExtension.Initialize(hc);
+
+                _actionManager.Setup(x => x.PrepareActionsAsync(It.IsAny<IExecutionContext>(), It.IsAny<IEnumerable<Pipelines.JobStep>>(), It.IsAny<Guid>()))
+                              .Returns(Task.FromResult(new PrepareResult(new List<JobExtensionRunner>(), new Dictionary<Guid, IActionRunner>())));
+
+                List<IStep> result = await jobExtension.InitializeJob(_jobEc, _message);
+
+                var trace = hc.GetTrace();
+
+                var hookStart = result.First() as JobExtensionRunner;
+
+                jobExtension.FinalizeJob(_jobEc, _message, DateTime.UtcNow);
+
+                Assert.Equal(Constants.Hooks.JobStartedStepName, hookStart.DisplayName);
+                Assert.Equal(Constants.Hooks.JobCompletedStepName, (_jobEc.PostJobSteps.Last() as JobExtensionRunner).DisplayName);                
+            }
+
+            Environment.SetEnvironmentVariable("ACTIONS_RUNNER_HOOK_JOB_STARTED", null);
+            Environment.SetEnvironmentVariable("ACTIONS_RUNNER_HOOK_JOB_COMPLETED", null);
+        }
+
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Worker")]
+        public void EnsureNoPreAndPostHookSteps()
+        {
+            using (TestHostContext hc = CreateTestContext())
+            {
+                var jobExtension = new JobExtension();
+                jobExtension.Initialize(hc);
+
+                _message.ActionsEnvironment = null;
+
+                _jobEc = new Runner.Worker.ExecutionContext {Result = TaskResult.Succeeded};
+                _jobEc.Initialize(hc);
+                _jobEc.InitializeJob(_message, _tokenSource.Token);
+
+                var x = _jobEc.JobSteps;
+
+                jobExtension.FinalizeJob(_jobEc, _message, DateTime.UtcNow);
+
+                Assert.Equal(TaskResult.Succeeded, _jobEc.Result);
+                Assert.Equal(0, _jobEc.PostJobSteps.Count);
+            }
+        }
     }
 }

src/Test/L0/Worker/OutputManagerL0.cs

@@ -3,9 +3,9 @@ using System.Collections.Generic;
 using System.Globalization;
 using System.IO;
 using System.Linq;
+using System.Runtime.CompilerServices;
 using System.Threading;
 using System.Threading.Tasks;
-using System.Runtime.CompilerServices;
 using GitHub.Runner.Sdk;
 using GitHub.Runner.Worker;
 using GitHub.Runner.Worker.Container;
@@ -937,6 +937,19 @@ namespace GitHub.Runner.Common.Tests.Worker
             }
         }
 
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Worker")]
+        public void CaptureTelemetryForGitUnsafeRepository()
+        {
+            using (Setup())
+            using (_outputManager)
+            {
+                Process("fatal: unsafe repository ('/github/workspace' is owned by someone else)");
+                Assert.Contains("fatal: unsafe repository ('/github/workspace' is owned by someone else)", _executionContext.Object.StepTelemetry.ErrorMessages);
+            }
+        }
+
         private TestHostContext Setup(
             [CallerMemberName] string name = "",
             IssueMatchersConfig matchers = null,
@@ -962,6 +975,8 @@ namespace GitHub.Runner.Common.Tests.Worker
                     Variables = _variables,
                     WriteDebug = true,
                 });
+            _executionContext.Setup(x => x.StepTelemetry)
+                .Returns(new DTWebApi.ActionsStepTelemetry());
             _executionContext.Setup(x => x.GetMatchers())
                 .Returns(matchers?.Matchers ?? new List<IssueMatcherConfig>());
             _executionContext.Setup(x => x.Add(It.IsAny<OnMatcherChanged>()))

src/Test/L0/Worker/StepHostL0.cs

@@ -7,6 +7,10 @@ using Xunit;
 using GitHub.Runner.Worker;
 using GitHub.Runner.Worker.Handlers;
 using GitHub.Runner.Worker.Container;
+using GitHub.DistributedTask.Pipelines.ContextData;
+using System.Linq;
+using GitHub.DistributedTask.Pipelines;
+using GitHub.DistributedTask.WebApi;
 
 namespace GitHub.Runner.Common.Tests.Worker
 {
@@ -21,6 +25,7 @@ namespace GitHub.Runner.Common.Tests.Worker
             _ec = new Mock<IExecutionContext>();
             _ec.SetupAllProperties();
             _ec.Setup(x => x.Global).Returns(new GlobalContext { WriteDebug = true });
+            _ec.Object.Global.Variables = new Variables(hc, new Dictionary<string, VariableValue>());
             var trace = hc.GetTrace();
             _ec.Setup(x => x.Write(It.IsAny<string>(), It.IsAny<string>())).Callback((string tag, string message) => { trace.Info($"[{tag}]{message}"); });
 
@@ -29,6 +34,7 @@ namespace GitHub.Runner.Common.Tests.Worker
             return hc;
         }
 
+#if OS_LINUX
         [Fact]
         [Trait("Level", "L0")]
         [Trait("Category", "Worker")]
@@ -105,5 +111,6 @@ namespace GitHub.Runner.Common.Tests.Worker
                 Assert.Equal("node16", nodeVersion);
             }
         }
+#endif
     }
 }