Add feature flag

Fix error + add diagnostics
Fix templating + assertion on template validation
2025-12-10 20:36:49 +00:00 · 2020-06-15 12:03:00 -04:00 · 2020-06-15 11:10:36 -04:00 · 2020-06-15 10:09:05 -04:00 · 2020-06-15 09:12:54 -04:00 · 2020-06-12 15:34:54 -04:00
40 changed files with 1062 additions and 1164 deletions
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -1,7 +1,6 @@
 name: Runner CI

 on:
-  workflow_dispatch:
  push:
    branches:
    - master
--- a/docs/adrs/0549-composite-run-steps.md
+++ b/docs/adrs/0549-composite-run-steps.md
@@ -1,275 +0,0 @@
-# ADR 054x: Composite Run Steps
-
-**Date**: 2020-06-17
-
-**Status**: Proposed
-
-**Relevant PR**: https://github.com/actions/runner/pull/549
-
-## Context
-
-Customers want to be able to compose actions from actions (ex: https://github.com/actions/runner/issues/438)
-
-An important step towards meeting this goal is to build in functionality for actions where users can simply execute any number of steps. 
-
-## Guiding Principles
-
-We don't want the workflow author to need to know how the internal workings of the action work. Users shouldn't know the internal workings of the composite action (for example, `default.shell` and `default.workingDir` should not be inherited from the workflow file to the action file). When deciding how to design certain parts of composite run steps, we want to think one logical step from the consumer.
-
-A composite action is treated as **one** individual job step (aka encapsulation).
-
-
-## Decision
-
-**In this ADR, we only support running multiple run steps in an Action.** In doing so, we build in support for mapping and flowing the inputs, outputs, and env variables (ex: All nested steps should have access to its parents' input variables and nested steps can overwrite the input variables).
-
-## Steps
-
-Example `workflow.yml`
-
-```yaml
-jobs:
-  build:
-    runs-on: self-hosted
-    steps:
-    - id: step1
-      uses: actions/setup-python@v1
-    - id: step2
-      uses: actions/setup-node@v2
-    - uses: actions/checkout@v2
-    - uses: user/composite@v1
-    - name: workflow step 1
-      run: echo hello world 3
-    - name: workflow step 2
-      run: echo hello world 4
-```
-
-Example `user/composite/action.yml`
-
-```yaml
-runs:
-  using: "composite"
-  steps:
-    - run: pip install -r requirements.txt
-    - run: npm install
-```
-
-Example Output
-
-```yaml
-[npm installation output]
-[pip requirements output]
-echo hello world 3
-echo hello world 4
-```
-
-We add a token called "composite" which allows our Runner code to process composite actions. By invoking "using: composite", our Runner code then processes the "steps" attribute, converts this template code to a list of steps, and finally runs each run step sequentially. If any step fails and there are no `if` conditions defined, the whole composite action job fails. 
-
-## Inputs
-
-Example `workflow.yml`:
-
-```yaml
-steps: 
-  - id: foo
-    uses: user/composite@v1
-    with:
-      your_name: "Octocat"
-```
-
-Example `user/composite/action.yml`:
-
-```yaml
-inputs:
-  your_name:
-    description: 'Your name'
-    default: 'Ethan'
-runs:
-  using: "composite"
-  steps: 
-    - run: echo hello ${{ inputs.your_name }}
-```
-
-Example Output:
-
-```
-hello Octocat
-```
-
-Each input variable in the composite action is only viewable in its own scope.
-
-## Outputs
-
-Example `workflow.yml`:
-
-```yaml
-...
-steps: 
-  - id: foo
-    uses: user/composite@v1
-  - run: echo random-number ${{ steps.foo.outputs.random-number }} 
-```
-
-Example `user/composite/action.yml`:
-
-```yaml
-outputs:
-  random-number: 
-    description: "Random number"
-    value: ${{ steps.random-number-generator.outputs.random-id }}
-runs:
-  using: "composite"
-  steps: 
-    - id: random-number-generator
-      run: echo "::set-output name=random-number::$(echo $RANDOM)"
-```
-
-Example Output:
-
-```
-::set-output name=my-output::43243
-random-number 43243
-```
-
-Each of the output variables from the composite action is viewable from the workflow file that uses the composite action. In other words, every child action output(s) is viewable only by its parent using dot notation (ex `steps.foo.outputs.random-number`).
-
-Moreover, the output ids are only accessible within the scope where it was defined. Note that in the example above, in our `workflow.yml` file, it should not have access to output id (i.e. `random-id`). The reason why we are doing this is because we don't want to require the workflow author to know the internal workings of the composite action.
-
-## Context
-
-Similar to the workflow file, the composite action has access to the [same context objects](https://help.github.com/en/actions/reference/context-and-expression-syntax-for-github-actions#contexts) (ex: `github`, `env`, `strategy`). 
-
-## Environment
-
-In the Composite Action, you'll only be able to use `::set-env::` to set environment variables just like you could with other actions.
-
-## Secrets
-
-**Note** : This feature will be focused on in a future ADR.
-
-We'll pass the secrets from the composite action's parents (ex: the workflow file) to the composite action. Secrets can be created in the composite action with the secrets context. In the actions yaml, we'll automatically mask the secret. 
-
-
-## If Condition
-
-Example `workflow.yml`:
-
-```yaml
-steps:
-  - run: exit 1
-  - uses: user/composite@v1  # <--- this will run, as it's marked as always runing
-    if: always()
-```
-
-Example `user/composite/action.yml`:
-
-```yaml
-runs:
-  using: "composite"
-  steps:
-    - run: echo "just succeeding"
-    - run: echo "I will run, as my current scope is succeeding"
-      if: success()
-    - run: exit 1
-    - run: echo "I will not run, as my current scope is now failing"
-```
-
-See the paragraph below for a rudimentary approach (thank you to @cybojenix for the idea, example, and explanation for this approach):
-
-The `if` statement in the parent (in the example above, this is the `workflow.yml`) shows whether or not we should run the composite action. So, our composite action will run since the `if` condition for running the composite action is `always()`.
-
-**Note that the if condition on the parent does not propogate to the rest of its children though.**
-
-In the child action (in this example, this is the `action.yml`), it starts with a clean slate (in other words, no imposing if conditions). Similar to the logic in the paragraph above, `echo "I will run, as my current scope is succeeding"` will run since the `if` condition checks if the previous steps **within this composite action** has not failed. `run: echo "I will not run, as my current scope is now failing"` will not run since the previous step resulted in an error and by default, the if expression is set to `success()` if the if condition is not set for a step.
-
-
-What if a step has `cancelled()`? We do the opposite of our approach above if `cancelled()` is used for any of our composite run steps. We will cancel any step that has this condition if the workflow is cancelled at all.
-    
-## Timeout-minutes
-
-Example `workflow.yml`:
-
-```yaml
-steps: 
-  - id: bar
-    uses: user/test@v1
-    timeout-minutes: 50
-```
-
-Example `user/composite/action.yml`:
-
-```yaml
-runs:
-  using: "composite"
-  steps: 
-    - id: foo1
-      run: echo test 1
-      timeout-minutes: 10
-    - id: foo2
-      run: echo test 2
-    - id: foo3
-      run: echo test 3
-      timeout-minutes: 10
-```
-
-A composite action in its entirety is a job. You can set both timeout-minutes for the whole composite action or its steps as long as the the sum of the `timeout-minutes` for each composite action step that has the attribute `timeout-minutes` is less than or equals to `timeout-minutes` for the composite action. There is no default timeout-minutes for each composite action step. 
-
-If the time taken for any of the steps in combination or individually exceed the whole composite action `timeout-minutes` attribute, the whole job will fail (1). If an individual step exceeds its own `timeout-minutes` attribute but the total time that has been used including this step is below the overall composite action `timeout-minutes`, the individual step will fail but the rest of the steps will run based on their own `timeout-minutes` attribute (they will still abide by condition (1) though).
-
-For reference, in the example above, if the composite step `foo1` takes 11 minutes to run, that step will fail but the rest of the steps, `foo1` and `foo2`, will proceed as long as their total runtime with the previous failed `foo1` action is less than the composite action's `timeout-minutes` (50 minutes). If the composite step `foo2` takes 51 minutes to run, it will cause the whole composite action job to fail. I
-
-The rationale behind this is that users can configure their steps with the `if` condition to conditionally set how steps rely on each other. Due to the additional capabilities that are offered with combining `timeout-minutes` and/or `if`, we wanted the `timeout-minutes` condition to be as dumb as possible and not effect other steps. 
-
-[Usage limits still apply](https://help.github.com/en/actions/reference/workflow-syntax-for-github-actions?query=if%28%29#usage-limits)
-
-
-## Continue-on-error
-
-Example `workflow.yml`:
-
-```yaml
-steps: 
-  - run: exit 1
-  - id: bar
-    uses: user/test@v1
-    continue-on-error: false
-  - id: foo
-    run: echo "Hello World" <------- This step will not run
-```
-
-Example `user/composite/action.yml`:
-
-```yaml
-runs:
-  using: "composite"
-  steps: 
-    - run: exit 1
-      continue-on-error: true
-    - run: echo "Hello World 2" <----- This step will run
-```
-
-If any of the steps fail in the composite action and the `continue-on-error` is set to `false` for the whole composite action step in the workflow file, then the steps below it will run. On the flip side, if `continue-on-error` is set to `true` for the whole composite action step in the workflow file, the next job step will run.
-
-For the composite action steps, it follows the same logic as above. In this example, `"Hello World 2"` will be outputted because the previous step has `continue-on-error` set to `true` although that previous step errored. 
-
-## Defaults
-
-The composite action author will be required to set the `shell` and `workingDir` of the composite action. Moreover, the composite action author will be able to explicitly set the shell for each composite run step. The workflow author will not have the ability to change these attributes. 
-
-## Visualizing Composite Action in the GitHub Actions UI
-We want all the composite action's steps to be condensed into the original composite action node. 
-
-Here is a visual represenation of the [first example](#Steps)
-
-```yaml
-| composite_action_node |
-    | echo hello world 1 | 
-    | echo hello world 2 |
-| echo hello world 3 | 
-| echo hello world 4 |
-
-```
-
-
-## Conclusion
-This ADR lays the framework for eventually supporting nested Composite Actions within Composite Actions. This ADR allows for users to run multiple run steps within a GitHub Composite Action with the support of inputs, outputs, environment, and context for use in any steps as well as the if, timeout-minutes, and the continue-on-error attributes for each Composite Action step. 
--- a/docs/contribute.md
+++ b/docs/contribute.md
@@ -51,19 +51,6 @@ cd ./src
 ./dev.(sh/cmd) test # run all unit tests before git commit/push
 ```

-View logs:
-```bash
-cd runner/_layout/_diag
-ls
-cat (Runner/Worker)_TIMESTAMP.log # view your log file
-```
-
-Run Runner:
-```bash
-cd runner/_layout
-./run.sh # run your custom runner
-```
-
 ### Editors

 [Using Visual Studio Code](https://code.visualstudio.com/)
--- a/releaseNote.md
+++ b/releaseNote.md
@@ -1,18 +1,14 @@
 ## Features
-  - Resolve action download info from server (#508, #515, #550)
-  - Print runner and machine name to log. (#539)
+  - N/A
 ## Bugs
-  - Reduce input validation warnings (#506) 
-  - Fix null ref exception in SecretMasker caused by `hashfiles` timeout. (#516)
-  - Add libicu66 to `./installDependencies.sh` for Ubuntu 20.04 (#535)
-  - Fix DataContract with Token service (#532)
-  - Skip search $PATH on command with fully qualified path (#526)
-  - Restore SELinux context on service file when SELinux is enabled (#525)
+  - Handle `jq` returns "null" if the field does not exist in create-latest-svc.sh (#478)
+  - Switch GITHUB_URL to GITHUB_SERVER_URL (#482)
+  - Fix problem matcher for GHES (#488)
+  - Fix container action inputs validation warning (#490)
+  - Fix post step display name (#490)
+  - Fix worker crash due to exception from evaluating step.env (#490)
 ## Misc
-  - Remove SPS/Token migration code. Remove GHES url manipulate code. (#513) 
-  - Add sub-step for developer flow for clarity (#523)
-  - Update Links and Language to Git + VSCode (#522)
-  - Update runner configuration exception message (#540)
+  - N/A

 ## 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.
--- a/src/Misc/dotnet-install.ps1
+++ b/src/Misc/dotnet-install.ps1
@@ -154,16 +154,7 @@ function Invoke-With-Retry([ScriptBlock]$ScriptBlock, [int]$MaxAttempts = 3, [in
 function Get-Machine-Architecture() {
    Say-Invocation $MyInvocation

-    # On PS x86, PROCESSOR_ARCHITECTURE reports x86 even on x64 systems.
-    # To get the correct architecture, we need to use PROCESSOR_ARCHITEW6432.
-    # PS x64 doesn't define this, so we fall back to PROCESSOR_ARCHITECTURE.
-    # Possible values: amd64, x64, x86, arm64, arm
-
-    if( $ENV:PROCESSOR_ARCHITEW6432 -ne $null )
-    {    
-        return $ENV:PROCESSOR_ARCHITEW6432
-    }
-
+    # possible values: amd64, x64, x86, arm64, arm
    return $ENV:PROCESSOR_ARCHITECTURE
 }

@@ -695,194 +686,194 @@ Say "Installation finished"
 exit 0

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+# SIG # End signature block
--- a/src/Misc/externals.sh
+++ b/src/Misc/externals.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/bash
 PACKAGERUNTIME=$1
 PRECACHE=$2

--- a/src/Misc/layoutbin/darwin.svc.sh.template
+++ b/src/Misc/layoutbin/darwin.svc.sh.template
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/bash

 SVC_NAME="{{SvcNameVar}}"
 SVC_NAME=${SVC_NAME// /_}
--- a/src/Misc/layoutbin/installdependencies.sh
+++ b/src/Misc/layoutbin/installdependencies.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/bash

 user_id=`id -u`

@@ -70,8 +70,8 @@ then
                exit 1
            fi

-            # libicu version prefer: libicu66 -> libicu63 -> libicu60 -> libicu57 -> libicu55 -> libicu52
-            apt install -y libicu66 || apt install -y libicu63 || apt install -y libicu60 || apt install -y libicu57 || apt install -y libicu55 || apt install -y libicu52
+            # libicu version prefer: libicu63 -> libicu60 -> libicu57 -> libicu55 -> libicu52
+            apt install -y libicu63 || apt install -y libicu60 || apt install -y libicu57 || apt install -y libicu55 || apt install -y libicu52
            if [ $? -ne 0 ]
            then
                echo "'apt' failed with exit code '$?'"
@@ -99,8 +99,8 @@ then
                    exit 1
                fi

-                # libicu version prefer: libicu66 -> libicu63 -> libicu60 -> libicu57 -> libicu55 -> libicu52
-                apt-get install -y libicu66 || apt-get install -y libicu63 || apt-get install -y libicu60 || apt install -y libicu57 || apt install -y libicu55 || apt install -y libicu52
+                # libicu version prefer: libicu63 -> libicu60 -> libicu57 -> libicu55 -> libicu52
+                apt-get install -y libicu63 || apt-get install -y libicu60 || apt install -y libicu57 || apt install -y libicu55 || apt install -y libicu52
                if [ $? -ne 0 ]
                then
                    echo "'apt-get' failed with exit code '$?'"
--- a/src/Misc/layoutbin/runsvc.sh
+++ b/src/Misc/layoutbin/runsvc.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/bash

 # convert SIGTERM signal to SIGINT
 # for more info on how to propagate SIGTERM to a child process see: http://veithen.github.io/2014/11/16/sigterm-propagation.html
--- a/src/Misc/layoutbin/systemd.svc.sh.template
+++ b/src/Misc/layoutbin/systemd.svc.sh.template
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/bash

 SVC_NAME="{{SvcNameVar}}"
 SVC_NAME=${SVC_NAME// /_}
@@ -63,25 +63,12 @@ function install()

    sed "s/{{User}}/${run_as_user}/g; s/{{Description}}/$(echo ${SVC_DESCRIPTION} | sed -e 's/[\/&]/\\&/g')/g; s/{{RunnerRoot}}/$(echo ${RUNNER_ROOT} | sed -e 's/[\/&]/\\&/g')/g;" "${TEMPLATE_PATH}" > "${TEMP_PATH}" || failed "failed to create replacement temp file"
    mv "${TEMP_PATH}" "${UNIT_PATH}" || failed "failed to copy unit file"
-
-    # Recent Fedora based Linux (CentOS/Redhat) has SELinux enabled by default
-    # We need to restore security context on the unit file we added otherwise SystemD have no access to it.
-    command -v getenforce > /dev/null
-    if [ $? -eq 0 ]
-    then
-        selinuxEnabled=$(getenforce)
-        if [[ $selinuxEnabled == "Enforcing" ]]
-        then
-            # SELinux is enabled, we will need to Restore SELinux Context for the service file
-            restorecon -r -v "${UNIT_PATH}" || failed "failed to restore SELinux context on ${UNIT_PATH}"
-        fi
-    fi
    
    # unit file should not be executable and world writable
-    chmod 664 "${UNIT_PATH}" || failed "failed to set permissions on ${UNIT_PATH}"
+    chmod 664 ${UNIT_PATH} || failed "failed to set permissions on ${UNIT_PATH}"
    systemctl daemon-reload || failed "failed to reload daemons"
    
-    # Since we started with sudo, runsvc.sh will be owned by root. Change this to current login user.    
+	# Since we started with sudo, runsvc.sh will be owned by root. Change this to current login user.    
    cp ./bin/runsvc.sh ./runsvc.sh || failed "failed to copy runsvc.sh"
    chown ${run_as_uid}:${run_as_gid} ./runsvc.sh || failed "failed to set owner for runsvc.sh"
    chmod 755 ./runsvc.sh || failed "failed to set permission for runsvc.sh"
--- a/src/Misc/layoutbin/update.sh.template
+++ b/src/Misc/layoutbin/update.sh.template
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/bash

 # runner will replace key words in the template and generate a batch script to run.
 # Keywords: 
--- a/src/Misc/layoutroot/config.sh
+++ b/src/Misc/layoutroot/config.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/bash

 user_id=`id -u`

--- a/src/Misc/layoutroot/env.sh
+++ b/src/Misc/layoutroot/env.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/bash

 varCheckList=(
    'LANG' 
--- a/src/Misc/layoutroot/run.sh
+++ b/src/Misc/layoutroot/run.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/bash

 # Validate not sudo
 user_id=`id -u`
--- a/src/Runner.Listener/Configuration/ConfigurationManager.cs
+++ b/src/Runner.Listener/Configuration/ConfigurationManager.cs
@@ -210,7 +210,7 @@ namespace GitHub.Runner.Listener.Configuration
                    else if (command.Unattended)
                    {
                        // if not replace and it is unattended config.
-                        throw new TaskAgentExistsException($"A runner exists with the same name {runnerSettings.AgentName}.");
+                        throw new TaskAgentExistsException($"Pool {runnerSettings.PoolId} already contains a runner with name {runnerSettings.AgentName}.");
                    }
                }
                else
--- a/src/Runner.Listener/Runner.cs
+++ b/src/Runner.Listener/Runner.cs
@@ -37,6 +37,8 @@ namespace GitHub.Runner.Listener
        {
            try
            {
+                _term.WriteLine("Runner Repo TESTING VERSION OF RUNNER...");
+                Trace.Info("Hey I'm in the log file yay!");
                VssUtil.InitializeVssClientSettings(HostContext.UserAgents, HostContext.WebProxy);

                _inConfigStage = true;
--- a/src/Runner.Sdk/ProcessInvoker.cs
+++ b/src/Runner.Sdk/ProcessInvoker.cs
@@ -346,16 +346,16 @@ namespace GitHub.Runner.Sdk
                // data buffers one last time before returning
                ProcessOutput();

-                if (cancellationToken.IsCancellationRequested)
-                {
-                    // Ensure cancellation also finish on the cancellationToken.Register thread.
-                    await cancellationFinished.Task;
-                    Trace.Info($"Process Cancellation finished.");
-                }
-
                Trace.Info($"Finished process {_proc.Id} with exit code {_proc.ExitCode}, and elapsed time {_stopWatch.Elapsed}.");
            }

+            if (cancellationToken.IsCancellationRequested)
+            {
+                // Ensure cancellation also finish on the cancellationToken.Register thread.
+                await cancellationFinished.Task;
+                Trace.Info($"Process Cancellation finished.");
+            }
+
            cancellationToken.ThrowIfCancellationRequested();

            // Wait for process to finish.
--- a/src/Runner.Sdk/Util/WhichUtil.cs
+++ b/src/Runner.Sdk/Util/WhichUtil.cs
@@ -11,11 +11,6 @@ namespace GitHub.Runner.Sdk
        {
            ArgUtil.NotNullOrEmpty(command, nameof(command));
            trace?.Info($"Which: '{command}'");
-            if (Path.IsPathFullyQualified(command) && File.Exists(command))
-            {
-                trace?.Info($"Fully qualified path: '{command}'");
-                return command;
-            }
            string path = Environment.GetEnvironmentVariable(PathUtil.PathVariable);
            if (string.IsNullOrEmpty(path))
            {
--- a/src/Runner.Worker/ActionManager.cs
+++ b/src/Runner.Worker/ActionManager.cs
@@ -395,13 +395,8 @@ namespace GitHub.Runner.Worker
                            Trace.Info($"Action cleanup plugin: {plugin.PluginTypeName}.");
                        }
                    }
-                    else if (definition.Data.Execution.ExecutionType == ActionExecutionType.Composite && !string.IsNullOrEmpty(Environment.GetEnvironmentVariable("TESTING_COMPOSITE_ACTIONS_ALPHA")))
-                    {
-                        var compositeAction = definition.Data.Execution as CompositeActionExecutionData;
-                        Trace.Info($"Load {compositeAction.Steps?.Count ?? 0} action steps.");
-                        Trace.Verbose($"Details: {StringUtil.ConvertToJson(compositeAction?.Steps)}");
-                        Trace.Info($"Load: {compositeAction.Outputs?.Count ?? 0} number of outputs");
-                        Trace.Info($"Details: {StringUtil.ConvertToJson(compositeAction?.Outputs)}");
+                    else if (definition.Data.Execution.ExecutionType == ActionExecutionType.Composite && !String.IsNullOrEmpty(Environment.GetEnvironmentVariable("TESTING_COMPOSITE_ACTIONS_ALPHA"))) {
+                        // Don't do anything for now
                    }
                    else
                    {
@@ -554,6 +549,56 @@ namespace GitHub.Runner.Worker
            }
        }

+        // This implementation is temporary and will be removed when we switch to a REST API call to the service to resolve the download info
+        private async Task<bool> RepoExistsAsync(IExecutionContext executionContext, WebApi.ActionDownloadInfo actionDownloadInfo, string token)
+        {
+            var apiUrl = GetApiUrl(executionContext);
+            var repoUrl = $"{apiUrl}/repos/{actionDownloadInfo.NameWithOwner}";
+            for (var attempt = 1; attempt <= 3; attempt++)
+            {
+                executionContext.Debug($"Checking whether repo exists: {repoUrl}");
+                try
+                {
+                    using (var httpClientHandler = HostContext.CreateHttpClientHandler())
+                    using (var httpClient = new HttpClient(httpClientHandler))
+                    {
+                        httpClient.DefaultRequestHeaders.Authorization = CreateAuthHeader(token);
+                        httpClient.DefaultRequestHeaders.UserAgent.AddRange(HostContext.UserAgents);
+                        using (var response = await httpClient.GetAsync(repoUrl))
+                        {
+                            if (response.IsSuccessStatusCode)
+                            {
+                                return true;
+                            }
+                            else if (response.StatusCode == HttpStatusCode.NotFound)
+                            {
+                                return false;
+                            }
+                            else
+                            {
+                                // Throw
+                                response.EnsureSuccessStatusCode();
+                            }
+                        }
+                    }
+                }
+                catch (Exception ex)
+                {
+                    if (attempt < 3)
+                    {
+                        executionContext.Debug($"Failed checking whether repo '{actionDownloadInfo.NameWithOwner}' exists: {ex.Message}");
+                    }
+                    else
+                    {
+                        executionContext.Error($"Failed checking whether repo '{actionDownloadInfo.NameWithOwner}' exists: {ex.Message}");
+                        throw;
+                    }
+                }
+            }
+
+            return false; // Never reaches here
+        }
+
        // This implementation is temporary and will be replaced with a REST API call to the service to resolve
        private async Task<IDictionary<string, WebApi.ActionDownloadInfo>> GetDownloadInfoAsync(IExecutionContext executionContext, List<Pipelines.ActionStep> actions)
        {
@@ -617,10 +662,23 @@ namespace GitHub.Runner.Worker
                // Add secret
                HostContext.SecretMasker.AddValue(actionDownloadInfo.Authentication?.Token);

-                // Default auth token
-                if (string.IsNullOrEmpty(actionDownloadInfo.Authentication?.Token))
+                // Temporary code: Fix token and download URL
+                if (runnerSettings.IsHostedServer)
                {
                    actionDownloadInfo.Authentication = new WebApi.ActionDownloadAuthentication { Token = defaultAccessToken };
+                    actionDownloadInfo.TarballUrl = actionDownloadInfo.TarballUrl.Replace("<GITHUB_API_URL>", apiUrl);
+                    actionDownloadInfo.ZipballUrl = actionDownloadInfo.ZipballUrl.Replace("<GITHUB_API_URL>", apiUrl);
+                }
+                else if (await RepoExistsAsync(executionContext, actionDownloadInfo, defaultAccessToken))
+                {
+                    actionDownloadInfo.Authentication = new WebApi.ActionDownloadAuthentication { Token = defaultAccessToken };
+                    actionDownloadInfo.TarballUrl = actionDownloadInfo.TarballUrl.Replace("<GITHUB_API_URL>", apiUrl);
+                    actionDownloadInfo.ZipballUrl = actionDownloadInfo.ZipballUrl.Replace("<GITHUB_API_URL>", apiUrl);
+                }
+                else
+                {
+                    actionDownloadInfo.TarballUrl = actionDownloadInfo.TarballUrl.Replace("<GITHUB_API_URL>", "https://api.github.com");
+                    actionDownloadInfo.ZipballUrl = actionDownloadInfo.ZipballUrl.Replace("<GITHUB_API_URL>", "https://api.github.com");
                }
            }

@@ -1046,9 +1104,10 @@ namespace GitHub.Runner.Worker
                    Trace.Info($"Action plugin: {(actionDefinitionData.Execution as PluginActionExecutionData).Plugin}, no more preparation.");
                    return null;
                }
-                else if (actionDefinitionData.Execution.ExecutionType == ActionExecutionType.Composite && !string.IsNullOrEmpty(Environment.GetEnvironmentVariable("TESTING_COMPOSITE_ACTIONS_ALPHA")))
+                else if (actionDefinitionData.Execution.ExecutionType == ActionExecutionType.Composite && !String.IsNullOrEmpty(Environment.GetEnvironmentVariable("TESTING_COMPOSITE_ACTIONS_ALPHA")))
                {
-                    Trace.Info($"Action composite: {(actionDefinitionData.Execution as CompositeActionExecutionData).Steps}, no more preparation.");
+                    // Trace.Info($"Action composite: {(actionDefinitionData.Execution as CompositeActionExecutionData).Unknown}, no more preparation.");
+                    
                    return null;
                }
                else
@@ -1161,7 +1220,7 @@ namespace GitHub.Runner.Worker
        NodeJS,
        Plugin,
        Script,
-        Composite,
+        Composite
    }

    public sealed class ContainerActionExecutionData : ActionExecutionData
@@ -1220,11 +1279,21 @@ namespace GitHub.Runner.Worker

    public sealed class CompositeActionExecutionData : ActionExecutionData
    {
+        // Do I actually need this??
+        // Pre => pre execution for checking steps before, ibid for post
+        // Look at Script for dummy example
+
        public override ActionExecutionType ExecutionType => ActionExecutionType.Composite;
        public override bool HasPre => false;
        public override bool HasPost => false;
-        public List<Pipelines.ActionStep> Steps { get; set; }
-        public MappingToken Outputs { get; set; }
+
+        public List<Pipelines.ActionStep> Steps {get; set;}
+
+        // public string Script { get; set; }
+
+        // public string Pre { get; set; }
+
+        // public string Post { get; set; }
    }

    public abstract class ActionExecutionData
--- a/src/Runner.Worker/ActionManifestManager.cs
+++ b/src/Runner.Worker/ActionManifestManager.cs
@@ -14,7 +14,7 @@ using YamlDotNet.Core;
 using YamlDotNet.Core.Events;
 using System.Globalization;
 using System.Linq;
-using Pipelines = GitHub.DistributedTask.Pipelines;
+using GitHub.DistributedTask.Pipelines;

 namespace GitHub.Runner.Worker
 {
@@ -23,20 +23,18 @@ namespace GitHub.Runner.Worker
    {
        ActionDefinitionData Load(IExecutionContext executionContext, string manifestFile);

-        DictionaryContextData EvaluateCompositeOutputs(IExecutionContext executionContext, TemplateToken token, IDictionary<string, PipelineContextData> extraExpressionValues);
-
        List<string> EvaluateContainerArguments(IExecutionContext executionContext, SequenceToken token, IDictionary<string, PipelineContextData> extraExpressionValues);

        Dictionary<string, string> EvaluateContainerEnvironment(IExecutionContext executionContext, MappingToken token, IDictionary<string, PipelineContextData> extraExpressionValues);

        string EvaluateDefaultInput(IExecutionContext executionContext, string inputName, TemplateToken token);
-
-        void SetAllCompositeOutputs(IExecutionContext parentExecutionContext, DictionaryContextData actionOutputs);
    }

    public sealed class ActionManifestManager : RunnerService, IActionManifestManager
    {
        private TemplateSchema _actionManifestSchema;
+        private IReadOnlyList<String> _fileTable;
+
        public override void Initialize(IHostContext hostContext)
        {
            base.Initialize(hostContext);
@@ -57,45 +55,25 @@ namespace GitHub.Runner.Worker

        public ActionDefinitionData Load(IExecutionContext executionContext, string manifestFile)
        {
-            var templateContext = CreateContext(executionContext);
+            var context = CreateContext(executionContext);
            ActionDefinitionData actionDefinition = new ActionDefinitionData();
-
-            // Clean up file name real quick
-            // Instead of using Regex which can be computationally expensive, 
-            // we can just remove the # of characters from the fileName according to the length of the basePath
-            string basePath = HostContext.GetDirectory(WellKnownDirectory.Actions);
-            string fileRelativePath = manifestFile;
-            if (manifestFile.Contains(basePath))
-            {
-                fileRelativePath = manifestFile.Remove(0, basePath.Length + 1);
-            }
-
            try
            {
                var token = default(TemplateToken);

                // Get the file ID
-                var fileId = templateContext.GetFileId(fileRelativePath);
-
-                // Add this file to the FileTable in executionContext if it hasn't been added already
-                // we use > since fileID is 1 indexed
-                if (fileId > executionContext.FileTable.Count)
-                {
-                    executionContext.FileTable.Add(fileRelativePath);
-                }
+                var fileId = context.GetFileId(manifestFile);
+                _fileTable = context.GetFileTable();

                // Read the file
                var fileContent = File.ReadAllText(manifestFile);
                using (var stringReader = new StringReader(fileContent))
                {
-                    var yamlObjectReader = new YamlObjectReader(fileId, stringReader);
-                    token = TemplateReader.Read(templateContext, "action-root", yamlObjectReader, fileId, out _);
+                    var yamlObjectReader = new YamlObjectReader(null, stringReader);
+                    token = TemplateReader.Read(context, "action-root", yamlObjectReader, fileId, out _);
                }

                var actionMapping = token.AssertMapping("action manifest root");
-                var actionOutputs = default(MappingToken);
-                var actionRunValueToken = default(TemplateToken);
-
                foreach (var actionPair in actionMapping)
                {
                    var propertyName = actionPair.Key.AssertString($"action.yml property key");
@@ -106,61 +84,44 @@ namespace GitHub.Runner.Worker
                            actionDefinition.Name = actionPair.Value.AssertString("name").Value;
                            break;

-                        case "outputs":
-                            if (!string.IsNullOrEmpty(Environment.GetEnvironmentVariable("TESTING_COMPOSITE_ACTIONS_ALPHA")))
-                            {
-                                actionOutputs = actionPair.Value.AssertMapping("outputs");
-                                break;
-                            }
-                            Trace.Info($"Ignore action property outputs. Outputs for a whole action is not supported yet.");
-                            break;
-
                        case "description":
                            actionDefinition.Description = actionPair.Value.AssertString("description").Value;
                            break;

                        case "inputs":
-                            ConvertInputs(templateContext, actionPair.Value, actionDefinition);
+                            ConvertInputs(context, actionPair.Value, actionDefinition);
                            break;

                        case "runs":
-                            // Defer runs token evaluation to after for loop to ensure that order of outputs doesn't matter.
-                            actionRunValueToken = actionPair.Value;
+                            actionDefinition.Execution = ConvertRuns(executionContext, context, actionPair.Value);
                            break;
-
                        default:
                            Trace.Info($"Ignore action property {propertyName}.");
                            break;
                    }
                }
-
-                // Evaluate Runs Last
-                if (actionRunValueToken != null)
-                {
-                    actionDefinition.Execution = ConvertRuns(executionContext, templateContext, actionRunValueToken, actionOutputs);
-                }
            }
            catch (Exception ex)
            {
                Trace.Error(ex);
-                templateContext.Errors.Add(ex);
+                context.Errors.Add(ex);
            }

-            if (templateContext.Errors.Count > 0)
+            if (context.Errors.Count > 0)
            {
-                foreach (var error in templateContext.Errors)
+                foreach (var error in context.Errors)
                {
                    Trace.Error($"Action.yml load error: {error.Message}");
                    executionContext.Error(error.Message);
                }

-                throw new ArgumentException($"Fail to load {fileRelativePath}");
+                throw new ArgumentException($"Fail to load {manifestFile}");
            }

            if (actionDefinition.Execution == null)
            {
                executionContext.Debug($"Loaded action.yml file: {StringUtil.ConvertToJson(actionDefinition)}");
-                throw new ArgumentException($"Top level 'runs:' section is required for {fileRelativePath}");
+                throw new ArgumentException($"Top level 'runs:' section is required for {manifestFile}");
            }
            else
            {
@@ -170,61 +131,6 @@ namespace GitHub.Runner.Worker
            return actionDefinition;
        }

-        public void SetAllCompositeOutputs(
-            IExecutionContext parentExecutionContext,
-            DictionaryContextData actionOutputs)
-        {
-            // Each pair is structured like this
-            // We ignore "description" for now
-            // {
-            //   "the-output-name": {
-            //     "description": "",
-            //     "value": "the value"
-            //   },
-            //   ...
-            // }
-            foreach (var pair in actionOutputs)
-            {
-                var outputsName = pair.Key;
-                var outputsAttributes = pair.Value as DictionaryContextData;
-                outputsAttributes.TryGetValue("value", out var val);
-                var outputsValue = val as StringContextData;
-
-                // Set output in the whole composite scope. 
-                if (!String.IsNullOrEmpty(outputsName) && !String.IsNullOrEmpty(outputsValue))
-                {
-                    parentExecutionContext.SetOutput(outputsName, outputsValue, out _);
-                }
-            }
-        }
-
-        public DictionaryContextData EvaluateCompositeOutputs(
-            IExecutionContext executionContext,
-            TemplateToken token,
-            IDictionary<string, PipelineContextData> extraExpressionValues)
-        {
-            var result = default(DictionaryContextData);
-
-            if (token != null)
-            {
-                var context = CreateContext(executionContext, extraExpressionValues);
-                try
-                {
-                    token = TemplateEvaluator.Evaluate(context, "outputs", token, 0, null, omitHeader: true);
-                    context.Errors.Check();
-                    result = token.ToContextData().AssertDictionary("composite outputs");
-                }
-                catch (Exception ex) when (!(ex is TemplateValidationException))
-                {
-                    context.Errors.Add(ex);
-                }
-
-                context.Errors.Check();
-            }
-
-            return result ?? new DictionaryContextData();
-        }
-
        public List<string> EvaluateContainerArguments(
            IExecutionContext executionContext,
            SequenceToken token,
@@ -376,10 +282,13 @@ namespace GitHub.Runner.Worker
                result.ExpressionFunctions.Add(item);
            }

-            // Add the file table from the Execution Context
-            for (var i = 0; i < executionContext.FileTable.Count; i++)
+            // Add the file table
+            if (_fileTable?.Count > 0)
            {
-                result.GetFileId(executionContext.FileTable[i]);
+                for (var i = 0 ; i < _fileTable.Count ; i++)
+                {
+                    result.GetFileId(_fileTable[i]);
+                }
            }

            return result;
@@ -388,8 +297,8 @@ namespace GitHub.Runner.Worker
        private ActionExecutionData ConvertRuns(
            IExecutionContext executionContext,
            TemplateContext context,
-            TemplateToken inputsToken,
-            MappingToken outputs = null)
+            TemplateToken inputsToken
+            )
        {
            var runsMapping = inputsToken.AssertMapping("runs");
            var usingToken = default(StringToken);
@@ -405,7 +314,14 @@ namespace GitHub.Runner.Worker
            var postToken = default(StringToken);
            var postEntrypointToken = default(StringToken);
            var postIfToken = default(StringToken);
-            var stepsLoaded = default(List<Pipelines.ActionStep>);
+            // TODO: How do I represent stepsToken as a list of steps?
+            // Well for default value, we can set it to this?
+            // var stepsToken = runsMapping.AssertMapping("steps");
+            // Actually, not sure, let's just set it to MappingToken since AssertMapping("steps") 
+            // returns a MappingToken
+            // var stepsToken = default(SequenceToken);
+            var stepsLoaded = default(List<ActionStep>);
+            // It should be a array (aka sequence)

            foreach (var run in runsMapping)
            {
@@ -452,14 +368,21 @@ namespace GitHub.Runner.Worker
                        preIfToken = run.Value.AssertString("pre-if");
                        break;
                    case "steps":
-                        if (!string.IsNullOrEmpty(Environment.GetEnvironmentVariable("TESTING_COMPOSITE_ACTIONS_ALPHA")))
-                        {
-                            var steps = run.Value.AssertSequence("steps");
-                            var evaluator = executionContext.ToPipelineTemplateEvaluator();
-                            stepsLoaded = evaluator.LoadCompositeSteps(steps);
-                            break;
-                        }
-                        throw new Exception("You aren't supposed to be using Composite Actions yet!");
+                        // stepsToken = run.Value.AssertMapping("steps");
+                        // Maybe insert a for loop here instead since MappingToken is not supposed to be used in HandlerFactory.cs
+                        // Just support 1 layer of steps w/ just run
+                        var steps = run.Value.AssertSequence("steps");
+                        // foreach (var s in steps) {
+                        //     // Create list of steps
+                        //     loadS
+                        // }
+                        // foreach (var run in runsMapping)
+                        // stepsToken = List
+                        // Call load steps here
+                        // var test = new PipelineTemplateEvaluator();
+                        var evaluator = executionContext.ToPipelineTemplateEvaluator();
+                        stepsLoaded = evaluator.LoadSteps(steps, null, null);
+                        break;
                    default:
                        Trace.Info($"Ignore run property {runsKey}.");
                        break;
@@ -507,19 +430,21 @@ namespace GitHub.Runner.Worker
                        };
                    }
                }
-                else if (string.Equals(usingToken.Value, "composite", StringComparison.OrdinalIgnoreCase) && !string.IsNullOrEmpty(Environment.GetEnvironmentVariable("TESTING_COMPOSITE_ACTIONS_ALPHA")))
+                // TODO: add composite stuff here
+                else if (string.Equals(usingToken.Value, "composite", StringComparison.OrdinalIgnoreCase))
                {
-                    if (stepsLoaded == null)
-                    {
-                        // TODO: Add a more helpful error message + including file name, etc. to show user that it's because of their yaml file
+                    // if (stepsToken.Count <= 0)
+                    // {
+                    //     throw new ArgumentNullException($"No steps provided.");
+                    // }
+                    if (stepsLoaded == null) {
                        throw new ArgumentNullException($"No steps provided.");
                    }
                    else
                    {
                        return new CompositeActionExecutionData()
                        {
-                            Steps = stepsLoaded,
-                            Outputs = outputs
+                            Steps = stepsLoaded
                        };
                    }
                }
--- a/src/Runner.Worker/ExecutionContext.cs
+++ b/src/Runner.Worker/ExecutionContext.cs
@@ -6,7 +6,6 @@ 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;
@@ -53,6 +52,7 @@ namespace GitHub.Runner.Worker
        IDictionary<String, IDictionary<String, String>> JobDefaults { get; }
        Dictionary<string, VariableValue> JobOutputs { get; }
        IDictionary<String, String> EnvironmentVariables { get; }
+        IDictionary<String, ContextScope> Scopes { get; }
        IList<String> FileTable { get; }
        StepsContext StepsContext { get; }
        DictionaryContextData ExpressionValues { get; }
@@ -63,19 +63,17 @@ namespace GitHub.Runner.Worker
        JobContext JobContext { get; }

        // Only job level ExecutionContext has JobSteps
-        List<IStep> JobSteps { get; }
+        Queue<IStep> JobSteps { get; }

        // Only job level ExecutionContext has PostJobSteps
        Stack<IStep> PostJobSteps { get; }

        bool EchoOnActionCommand { get; set; }

-        IExecutionContext FinalizeContext { get; set; }
-
        // Initialize
        void InitializeJob(Pipelines.AgentJobRequestMessage message, CancellationToken token);
        void CancelToken();
-        IExecutionContext CreateChild(Guid recordId, string displayName, string refName, string scopeName, string contextName, Dictionary<string, string> intraActionState = null, int? recordOrder = null, IPagingLogger logger = null);
+        IExecutionContext CreateChild(Guid recordId, string displayName, string refName, string scopeName, string contextName, Dictionary<string, string> intraActionState = null, int? recordOrder = null);

        // logging
        bool WriteDebug { get; }
@@ -107,7 +105,6 @@ namespace GitHub.Runner.Worker
        // others
        void ForceTaskComplete();
        void RegisterPostJobStep(IStep step);
-        IStep RegisterNestedStep(IActionRunner step, DictionaryContextData inputsData, int location, Dictionary<string, string> envData, bool cleanUp = false);
    }

    public sealed class ExecutionContext : RunnerService, IExecutionContext
@@ -122,9 +119,6 @@ namespace GitHub.Runner.Worker

        private event OnMatcherChanged _onMatcherChanged;

-        // Regex used for checking if ScopeName meets the condition that shows that its id is null.
-        private readonly static Regex _generatedContextNamePattern = new Regex("^__[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$", RegexOptions.Compiled | RegexOptions.CultureInvariant | RegexOptions.IgnoreCase);
-
        private IssueMatcherConfig[] _matchers;

        private IPagingLogger _logger;
@@ -154,6 +148,7 @@ namespace GitHub.Runner.Worker
        public IDictionary<String, IDictionary<String, String>> JobDefaults { get; private set; }
        public Dictionary<string, VariableValue> JobOutputs { get; private set; }
        public IDictionary<String, String> EnvironmentVariables { get; private set; }
+        public IDictionary<String, ContextScope> Scopes { get; private set; }
        public IList<String> FileTable { get; private set; }
        public StepsContext StepsContext { get; private set; }
        public DictionaryContextData ExpressionValues { get; } = new DictionaryContextData();
@@ -164,7 +159,7 @@ namespace GitHub.Runner.Worker
        public List<ContainerInfo> ServiceContainers { get; private set; }

        // Only job level ExecutionContext has JobSteps
-        public List<IStep> JobSteps { get; private set; }
+        public Queue<IStep> JobSteps { get; private set; }

        // Only job level ExecutionContext has PostJobSteps
        public Stack<IStep> PostJobSteps { get; private set; }
@@ -174,7 +169,6 @@ namespace GitHub.Runner.Worker

        public bool EchoOnActionCommand { get; set; }

-        public IExecutionContext FinalizeContext { get; set; }

        public TaskResult? Result
        {
@@ -272,55 +266,7 @@ namespace GitHub.Runner.Worker
            Root.PostJobSteps.Push(step);
        }

-        /// <summary>
-        /// Helper function used in CompositeActionHandler::RunAsync to
-        /// add a child node, aka a step, to the current job to the Root.JobSteps based on the location. 
-        /// </summary>
-        public IStep RegisterNestedStep(
-            IActionRunner step,
-            DictionaryContextData inputsData,
-            int location,
-            Dictionary<string, string> envData,
-            bool cleanUp = false)
-        {
-            // If the context name is empty and the scope name is empty, we would generate a unique scope name for this child in the following format:
-            // "__<GUID>"
-            var safeContextName = !string.IsNullOrEmpty(ContextName) ? ContextName : $"__{Guid.NewGuid()}";
-
-            // Set Scope Name. Note, for our design, we consider each step in a composite action to have the same scope
-            // This makes it much simpler to handle their outputs at the end of the Composite Action
-            var childScopeName = !string.IsNullOrEmpty(ScopeName) ? $"{ScopeName}.{safeContextName}" : safeContextName;
-
-            var childContextName = !string.IsNullOrEmpty(step.Action.ContextName) ? step.Action.ContextName : $"__{Guid.NewGuid()}";
-
-            step.ExecutionContext = Root.CreateChild(_record.Id, step.DisplayName, _record.Id.ToString("N"), childScopeName, childContextName, logger: _logger);
-
-            step.ExecutionContext.ExpressionValues["inputs"] = inputsData;
-
-            // Set Parent Attribute for Clean Up Step
-            if (cleanUp)
-            {
-                step.ExecutionContext.FinalizeContext = this;
-            }
-
-            // Add the composite action environment variables to each step.
-#if OS_WINDOWS
-            var envContext = new DictionaryContextData();
-#else
-            var envContext = new CaseSensitiveDictionaryContextData();
-#endif
-            foreach (var pair in envData)
-            {
-                envContext[pair.Key] = new StringContextData(pair.Value ?? string.Empty);
-            }
-            step.ExecutionContext.ExpressionValues["env"] = envContext;
-
-            Root.JobSteps.Insert(location, step);
-
-            return step;
-        }
-
-        public IExecutionContext CreateChild(Guid recordId, string displayName, string refName, string scopeName, string contextName, Dictionary<string, string> intraActionState = null, int? recordOrder = null, IPagingLogger logger = null)
+        public IExecutionContext CreateChild(Guid recordId, string displayName, string refName, string scopeName, string contextName, Dictionary<string, string> intraActionState = null, int? recordOrder = null)
        {
            Trace.Entering();

@@ -342,6 +288,7 @@ namespace GitHub.Runner.Worker
            }
            child.EnvironmentVariables = EnvironmentVariables;
            child.JobDefaults = JobDefaults;
+            child.Scopes = Scopes;
            child.FileTable = FileTable;
            child.StepsContext = StepsContext;
            foreach (var pair in ExpressionValues)
@@ -368,15 +315,9 @@ namespace GitHub.Runner.Worker
            {
                child.InitializeTimelineRecord(_mainTimelineId, recordId, _record.Id, ExecutionContextType.Task, displayName, refName, ++_childTimelineRecordOrder);
            }
-            if (logger != null)
-            {
-                child._logger = logger;
-            }
-            else
-            {
-                child._logger = HostContext.CreateService<IPagingLogger>();
-                child._logger.Setup(_mainTimelineId, recordId);
-            }
+
+            child._logger = HostContext.CreateService<IPagingLogger>();
+            child._logger.Setup(_mainTimelineId, recordId);

            return child;
        }
@@ -496,8 +437,7 @@ namespace GitHub.Runner.Worker
        {
            ArgUtil.NotNullOrEmpty(name, nameof(name));

-            // if the ContextName follows the __GUID format which is set as the default value for ContextName if null for Composite Actions. 
-            if (String.IsNullOrEmpty(ContextName) || _generatedContextNamePattern.IsMatch(ContextName))
+            if (String.IsNullOrEmpty(ContextName))
            {
                reference = null;
                return;
@@ -664,6 +604,16 @@ namespace GitHub.Runner.Worker
            // Steps context (StepsRunner manages adding the scoped steps context)
            StepsContext = new StepsContext();

+            // Scopes
+            Scopes = new Dictionary<String, ContextScope>(StringComparer.OrdinalIgnoreCase);
+            if (message.Scopes?.Count > 0)
+            {
+                foreach (var scope in message.Scopes)
+                {
+                    Scopes[scope.Name] = scope;
+                }
+            }
+
            // File table
            FileTable = new List<String>(message.FileTable ?? new string[0]);

@@ -710,7 +660,7 @@ namespace GitHub.Runner.Worker
            PrependPath = new List<string>();

            // JobSteps for job ExecutionContext
-            JobSteps = new List<IStep>();
+            JobSteps = new Queue<IStep>();

            // PostJobSteps for job ExecutionContext
            PostJobSteps = new Stack<IStep>();
--- a/src/Runner.Worker/Handlers/CompositeActionHandler.cs
+++ b/src/Runner.Worker/Handlers/CompositeActionHandler.cs
@@ -1,16 +1,15 @@
-using System;
-using System.Collections.Generic;
 using System.IO;
-using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
-using GitHub.DistributedTask.ObjectTemplating.Tokens;
-using GitHub.DistributedTask.Pipelines.ContextData;
-using GitHub.DistributedTask.WebApi;
 using GitHub.Runner.Common;
 using GitHub.Runner.Sdk;
+using GitHub.DistributedTask.WebApi;
 using Pipelines = GitHub.DistributedTask.Pipelines;
-
+using System;
+using System.Linq;
+using GitHub.DistributedTask.ObjectTemplating.Tokens;
+using System.Collections.Generic;
+using GitHub.DistributedTask.Pipelines.ContextData;

 namespace GitHub.Runner.Worker.Handlers
 {
@@ -19,12 +18,144 @@ namespace GitHub.Runner.Worker.Handlers
    {
        CompositeActionExecutionData Data { get; set; }
    }
+
+    // TODO: IMPLEMENT LOGIC FOR HANDLER CODE
    public sealed class CompositeActionHandler : Handler, ICompositeActionHandler
    {
        public CompositeActionExecutionData Data { get; set; }

-        public Task RunAsync(ActionRunStage stage)
+        // TODO: Implement PrintActionDetails()
+        public override void PrintActionDetails(ActionRunStage stage)
        {
+            // Just keep as same as ScriptHandler.cs for now
+            var target = Data.Steps;
+            var runStepInputs = target[0].Inputs;
+            var templateEvaluator = ExecutionContext.ToPipelineTemplateEvaluator();
+            var inputs = templateEvaluator.EvaluateStepInputs(runStepInputs, ExecutionContext.ExpressionValues, ExecutionContext.ExpressionFunctions);
+            var taskManager = HostContext.GetService<IActionManager>();
+            var userInputs = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
+            var runValue = "";
+            foreach (KeyValuePair<string, string> input in inputs)
+            {
+                userInputs.Add(input.Key);
+                userInputs.Add(input.Value);
+                if (input.Key.Equals("run"))
+                {
+                    runValue = input.Value;
+                }
+            }
+            var contents = runValue ?? string.Empty;
+            if (Action.Type == Pipelines.ActionSourceType.Repository)
+            {
+                var firstLine = contents.TrimStart(' ', '\t', '\r', '\n');
+                var firstNewLine = firstLine.IndexOfAny(new[] { '\r', '\n' });
+                if (firstNewLine >= 0)
+                {
+                    firstLine = firstLine.Substring(0, firstNewLine);
+                }
+
+                ExecutionContext.Output($"##[group]Run {firstLine}");
+            }
+            else
+            {
+                throw new InvalidOperationException($"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($"\x1b[36;1m{line}\x1b[0m");
+            }
+
+            string argFormat;
+            string shellCommand;
+            string shellCommandPath = null;
+            bool validateShellOnHost = !(StepHost is ContainerStepHost);
+            string prependPath = string.Join(Path.PathSeparator.ToString(), ExecutionContext.PrependPath.Reverse<string>());
+            string shell = null;
+            if (!Inputs.TryGetValue("shell", out shell) || string.IsNullOrEmpty(shell))
+            {
+                // TODO: figure out how defaults interact with template later
+                // for now, we won't check job.defaults if we are inside a template.
+                if (string.IsNullOrEmpty(ExecutionContext.ScopeName) && ExecutionContext.JobDefaults.TryGetValue("run", out var runDefaults))
+                {
+                    runDefaults.TryGetValue("shell", out shell);
+                }
+            }
+            if (string.IsNullOrEmpty(shell))
+            {
+#if OS_WINDOWS
+                shellCommand = "pwsh";
+                if (validateShellOnHost)
+                {
+                    shellCommandPath = WhichUtil.Which(shellCommand, require: false, Trace, prependPath);
+                    if (string.IsNullOrEmpty(shellCommandPath))
+                    {
+                        shellCommand = "powershell";
+                        Trace.Info($"Defaulting to {shellCommand}");
+                        shellCommandPath = WhichUtil.Which(shellCommand, require: true, Trace, prependPath);
+                    }
+                }
+#else
+                shellCommand = "sh";
+                if (validateShellOnHost)
+                {
+                    shellCommandPath = WhichUtil.Which("bash", false, Trace, prependPath) ?? WhichUtil.Which("sh", true, Trace, prependPath);
+                }
+#endif
+                argFormat = ScriptHandlerHelpers.GetScriptArgumentsFormat(shellCommand);
+            }
+            else
+            {
+                var parsed = ScriptHandlerHelpers.ParseShellOptionString(shell);
+                shellCommand = parsed.shellCommand;
+                if (validateShellOnHost)
+                {
+                    shellCommandPath = WhichUtil.Which(parsed.shellCommand, true, Trace, prependPath);
+                }
+
+                argFormat = $"{parsed.shellArgs}".TrimStart();
+                if (string.IsNullOrEmpty(argFormat))
+                {
+                    argFormat = ScriptHandlerHelpers.GetScriptArgumentsFormat(shellCommand);
+                }
+            }
+
+            if (!string.IsNullOrEmpty(shellCommandPath))
+            {
+                ExecutionContext.Output($"shell: {shellCommandPath} {argFormat}");
+            }
+            else
+            {
+                ExecutionContext.Output($"shell: {shellCommand} {argFormat}");
+            }
+
+            if (this.Environment?.Count > 0)
+            {
+                ExecutionContext.Output("env:");
+                foreach (var env in this.Environment)
+                {
+                    ExecutionContext.Output($"  {env.Key}: {env.Value}");
+                }
+            }
+
+            ExecutionContext.Output("##[endgroup]");
+        }
+
+        public async Task RunAsync(ActionRunStage stage)
+        {
+            // DELETE LATER
+            // await Task.Yield();
+
+
+            // Basically, the only difference from ScriptHandler.cs is that "contents" is not just each step under "run: "
+            // It might make more sense to:
+            // 1) Abstract the core functionality of the ScriptHandler.cs that we need for BOTH CompositeActionHandler.cs and ScriptHandler.cs
+            // 2) Call those functions in both handlers
+            // * There is already a file called ScriptHandlerHelpers.cs that might be a good location to add more functions. 
+
+            // Copied from ScriptHandler.cs
            // Validate args.
            Trace.Entering();
            ArgUtil.NotNull(ExecutionContext, nameof(ExecutionContext));
@@ -35,83 +166,234 @@ namespace GitHub.Runner.Worker.Handlers

            var tempDirectory = HostContext.GetDirectory(WellKnownDirectory.Temp);

-            // Resolve action steps
-            var actionSteps = Data.Steps;
-
-            // Create Context Data to reuse for each composite action step
-            var inputsData = new DictionaryContextData();
-            foreach (var i in Inputs)
-            {
-                inputsData[i.Key] = new StringContextData(i.Value);
+            // Resolve steps
+            var target = Data.Steps;
+            if (target == null) {
+                Trace.Error("Data.Steps in CompositeActionHandler is null");
+            } else {
+                Trace.Info($"Data Steps Value for Composite Actions is: {target}.");
            }

-            // Add each composite action step to the front of the queue
-            int location = 0;

-            foreach (Pipelines.ActionStep aStep in actionSteps)
+            // For now, just assume it is 1 Run step
+            // We will adapt this in the future. 
+            // Copied from ActionRunner.cs RunAsync() function => Maybe we don't need a handler and need to avoid this preplicatoin in the future?
+            var runStepInputs = target[0].Inputs;
+            if (runStepInputs == null) {
+                Trace.Error("runStepInputs in CompositeActionHandler is null");
+            } else {
+                Trace.Info($"runStepInputs Value for Composite Actions is: {runStepInputs}.");
+            }
+            var templateEvaluator = ExecutionContext.ToPipelineTemplateEvaluator();
+            var inputs = templateEvaluator.EvaluateStepInputs(runStepInputs, ExecutionContext.ExpressionValues, ExecutionContext.ExpressionFunctions);
+            var taskManager = HostContext.GetService<IActionManager>();
+
+            var userInputs = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
+            var runValue = "";
+            foreach (KeyValuePair<string, string> input in inputs)
            {
-                // Ex: 
-                // runs:
-                //      using: "composite"
-                //      steps:
-                //          - uses: example/test-composite@v2 (a)
-                //          - run echo hello world (b)
-                //          - run echo hello world 2 (c)
-                // 
-                // ethanchewy/test-composite/action.yaml
-                // runs:
-                //      using: "composite"
-                //      steps: 
-                //          - run echo hello world 3 (d)
-                //          - run echo hello world 4 (e)
-                // 
-                // Steps processed as follow:
-                // | a |
-                // | a | => | d |
-                // (Run step d)
-                // | a | 
-                // | a | => | e |
-                // (Run step e)
-                // | a | 
-                // (Run step a)
-                // | b | 
-                // (Run step b)
-                // | c |
-                // (Run step c)
-                // Done.
+                userInputs.Add(input.Key);
+                userInputs.Add(input.Value);
+                Trace.Info($"Composite Action Handler. Key: {input.Key} Value: {input.Value}");
+                // Why is the key should not be "run" => because the "run" keyword is recorgnized as something that will be a "script"?
+                // Or should we create another key that delineates between "script" and "run"?
+                // ^ Perhaps we can explore this in the next version with the changes the to action.yaml template
+                if (input.Key.Equals("script"))
+                {
+                    runValue = input.Value;
+                }

-                var actionRunner = HostContext.CreateService<IActionRunner>();
-                actionRunner.Action = aStep;
-                actionRunner.Stage = stage;
-                actionRunner.Condition = aStep.Condition;
+                // string message = "";
+                // if (definition.Data?.Deprecated?.TryGetValue(input.Key, out message) == true)
+                // {
+                //     ExecutionContext.Warning(String.Format("Input '{0}' has been deprecated with message: {1}", input.Key, message));
+                // }

-                var step = ExecutionContext.RegisterNestedStep(actionRunner, inputsData, location, Environment);
-
-                InitializeScope(step);
-
-                location++;
+                // Get the run bash value that we want to run
+                // In the future, we would apply and validate the template => maybe using the manifest manager to recursively load the json schema.
            }

-            // Create a step that handles all the composite action steps' outputs
-            Pipelines.ActionStep cleanOutputsStep = new Pipelines.ActionStep();
-            cleanOutputsStep.ContextName = ExecutionContext.ContextName;
-            // Use the same reference type as our composite steps.
-            cleanOutputsStep.Reference = Action;
+            Trace.Info($"Run Value for Composite Actions is: {runValue}.");

-            var actionRunner2 = HostContext.CreateService<IActionRunner>();
-            actionRunner2.Action = cleanOutputsStep;
-            actionRunner2.Stage = ActionRunStage.Main;
-            actionRunner2.Condition = "always()";
-            ExecutionContext.RegisterNestedStep(actionRunner2, inputsData, location, Environment, true);
+            // Let's think about validating inputs later
+            // Validate inputs only for actions with action.yml
+            // var unexpectedInputs = new List<string>();
+            // foreach (var input in userInputs)
+            // {
+            //     if (!validInputs.Contains(input))
+            //     {
+            //         unexpectedInputs.Add(input);
+            //     }
+            // }

-            return Task.CompletedTask;
+            // if (unexpectedInputs.Count > 0)
+            // {
+            //     ExecutionContext.Warning($"Unexpected input(s) '{string.Join("', '", unexpectedInputs)}', valid inputs are ['{string.Join("', '", validInputs)}']");
+            // }
+
+
+            //TODO:
+            // 6/11/20 EOD thoughts
+            // => What functions do I need to use from ScriptHandlerHelpers.cs?
+            // Do I need to Reverse the string for prepending the path??
+            //      ^ why or why not?
+            // How do I process the Inputs?
+            //      => It's a TemplateToken
+            // How do I incorporate Async? we call the StepHost for Async when you call ExecuteAsync()
+
+            // Detect operating system for fileName + arguments
+
+            var contents = runValue ?? string.Empty;
+
+            string workingDirectory = null;
+            if (!Inputs.TryGetValue("workingDirectory", out workingDirectory))
+            {
+                // TODO: figure out how defaults interact with template later
+                // for now, we won't check job.defaults if we are inside a template.
+                if (string.IsNullOrEmpty(ExecutionContext.ScopeName) && ExecutionContext.JobDefaults.TryGetValue("run", out var runDefaults))
+                {
+                    if (runDefaults.TryGetValue("working-directory", out workingDirectory))
+                    {
+                        ExecutionContext.Debug("Overwrite 'working-directory' base on job defaults.");
+                    }
+                }
+            }
+            var workspaceDir = githubContext["workspace"] as StringContextData;
+            workingDirectory = Path.Combine(workspaceDir, workingDirectory ?? string.Empty);
+
+
+            string shell = null;
+            if (!Inputs.TryGetValue("shell", out shell) || string.IsNullOrEmpty(shell))
+            {
+                // TODO: figure out how defaults interact with template later
+                // for now, we won't check job.defaults if we are inside a template.
+                if (string.IsNullOrEmpty(ExecutionContext.ScopeName) && ExecutionContext.JobDefaults.TryGetValue("run", out var runDefaults))
+                {
+                    if (runDefaults.TryGetValue("shell", out shell))
+                    {
+                        ExecutionContext.Debug("Overwrite 'shell' base on job defaults.");
+                    }
+                }
+            }
+
+            var isContainerStepHost = StepHost is ContainerStepHost;
+
+            string prependPath = string.Join(Path.PathSeparator.ToString(), ExecutionContext.PrependPath.Reverse<string>());
+            string commandPath, argFormat, shellCommand;
+
+            if (string.IsNullOrEmpty(shell))
+            {
+#if OS_WINDOWS
+                shellCommand = "pwsh";
+                commandPath = WhichUtil.Which(shellCommand, require: false, Trace, prependPath);
+                if (string.IsNullOrEmpty(commandPath))
+                {
+                    shellCommand = "powershell";
+                    Trace.Info($"Defaulting to {shellCommand}");
+                    commandPath = WhichUtil.Which(shellCommand, require: true, Trace, prependPath);
+                }
+                ArgUtil.NotNullOrEmpty(commandPath, "Default Shell");
+#else
+                shellCommand = "sh";
+                commandPath = WhichUtil.Which("bash", false, Trace, prependPath) ?? WhichUtil.Which("sh", true, Trace, prependPath);
+#endif
+                argFormat = ScriptHandlerHelpers.GetScriptArgumentsFormat(shellCommand);
+            }
+            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);
+                }
+            }
+
+            // No arg format was given, shell must be a built-in
+            if (string.IsNullOrEmpty(argFormat) || !argFormat.Contains("{0}"))
+            {
+                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("\"", "\\\"")}";
+
+            // Format arg string with script path
+            var arguments = string.Format(argFormat, resolvedScriptPath);
+
+            // Fix up and write the script
+            contents = ScriptHandlerHelpers.FixUpScriptContents(shellCommand, contents);
+#if OS_WINDOWS
+            // Normalize Windows line endings
+            contents = contents.Replace("\r\n", "\n").Replace("\n", "\r\n");
+            var encoding = ExecutionContext.Variables.Retain_Default_Encoding && Console.InputEncoding.CodePage != 65001
+                ? Console.InputEncoding
+                : new UTF8Encoding(false);
+#else
+            // 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);
+
+            // Prepend PATH
+            AddPrependPathToEnvironment();
+
+            // expose context to environment
+            foreach (var context in ExecutionContext.ExpressionValues)
+            {
+                if (context.Value is IEnvironmentContextData runtimeContext && runtimeContext != null)
+                {
+                    foreach (var env in runtimeContext.GetRuntimeEnvironmentVariables())
+                    {
+                        Environment[env.Key] = env.Value;
+                    }
+                }
+            }
+
+            // dump out the command
+            var fileName = isContainerStepHost ? shellCommand : commandPath;
+#if OS_OSX
+            if (Environment.ContainsKey("DYLD_INSERT_LIBRARIES"))  // We don't check `isContainerStepHost` because we don't support container on macOS
+            {
+                // launch `node macOSRunInvoker.js shell args` instead of `shell args` to avoid macOS SIP remove `DYLD_INSERT_LIBRARIES` when launch process
+                string node12 = Path.Combine(HostContext.GetDirectory(WellKnownDirectory.Externals), "node12", "bin", $"node{IOUtil.ExeExtension}");
+                string macOSRunInvoker = Path.Combine(HostContext.GetDirectory(WellKnownDirectory.Bin), "macos-run-invoker.js");
+                arguments = $"\"{macOSRunInvoker.Replace("\"", "\\\"")}\" \"{fileName.Replace("\"", "\\\"")}\" {arguments}";
+                fileName = node12;
+            }
+#endif
+            ExecutionContext.Debug($"{fileName} {arguments}");
+
+            using (var stdoutManager = new OutputManager(ExecutionContext, ActionCommandManager))
+            using (var stderrManager = new OutputManager(ExecutionContext, ActionCommandManager))
+            {
+                StepHost.OutputDataReceived += stdoutManager.OnDataReceived;
+                StepHost.ErrorDataReceived += stderrManager.OnDataReceived;
+
+                // Execute
+                int exitCode = await StepHost.ExecuteAsync(workingDirectory: StepHost.ResolvePathForStepHost(workingDirectory),
+                                            fileName: fileName,
+                                            arguments: arguments,
+                                            environment: Environment,
+                                            requireExitCodeZero: false,
+                                            outputEncoding: null,
+                                            killProcessOnCancel: false,
+                                            inheritConsoleHandler: !ExecutionContext.Variables.Retain_Default_Encoding,
+                                            cancellationToken: ExecutionContext.CancellationToken);
+
+                // Error
+                if (exitCode != 0)
+                {
+                    ExecutionContext.Error($"Process completed with exit code {exitCode}.");
+                    ExecutionContext.Result = TaskResult.Failed;
+                }
+            }
        }

-        private void InitializeScope(IStep step)
-        {
-            var stepsContext = step.ExecutionContext.StepsContext;
-            var scopeName = step.ExecutionContext.ScopeName;
-            step.ExecutionContext.ExpressionValues["steps"] = stepsContext.GetScope(scopeName);
-        }
    }
 }
--- a/src/Runner.Worker/Handlers/CompositeActionOutputHandler.cs
+++ b/src/Runner.Worker/Handlers/CompositeActionOutputHandler.cs
@@ -1,53 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-using GitHub.DistributedTask.ObjectTemplating.Schema;
-using GitHub.DistributedTask.ObjectTemplating.Tokens;
-using GitHub.DistributedTask.Pipelines.ContextData;
-using GitHub.DistributedTask.WebApi;
-using GitHub.Runner.Common;
-using GitHub.Runner.Sdk;
-using Pipelines = GitHub.DistributedTask.Pipelines;
-
-namespace GitHub.Runner.Worker.Handlers
-{
-    [ServiceLocator(Default = typeof(CompositeActionOutputHandler))]
-    public interface ICompositeActionOutputHandler : IHandler
-    {
-        CompositeActionExecutionData Data { get; set; }
-    }
-
-    public sealed class CompositeActionOutputHandler : Handler, ICompositeActionOutputHandler
-    {
-        public CompositeActionExecutionData Data { get; set; }
-
-
-        public Task RunAsync(ActionRunStage stage)
-        {
-            // Evaluate the mapped outputs value
-            if (Data.Outputs != null)
-            {
-                // Evaluate the outputs in the steps context to easily retrieve the values
-                var actionManifestManager = HostContext.GetService<IActionManifestManager>();
-
-                // Format ExpressionValues to Dictionary<string, PipelineContextData>
-                var evaluateContext = new Dictionary<string, PipelineContextData>(StringComparer.OrdinalIgnoreCase);
-                foreach (var pair in ExecutionContext.ExpressionValues)
-                {
-                    evaluateContext[pair.Key] = pair.Value;
-                }
-
-                // Get the evluated composite outputs' values mapped to the outputs named
-                DictionaryContextData actionOutputs = actionManifestManager.EvaluateCompositeOutputs(ExecutionContext, Data.Outputs, evaluateContext);
-
-                // Set the outputs for the outputs object in the whole composite action
-                actionManifestManager.SetAllCompositeOutputs(ExecutionContext.FinalizeContext, actionOutputs);
-            }
-
-            return Task.CompletedTask;
-        }
-    }
-}
--- a/src/Runner.Worker/Handlers/HandlerFactory.cs
+++ b/src/Runner.Worker/Handlers/HandlerFactory.cs
@@ -68,16 +68,11 @@ namespace GitHub.Runner.Worker.Handlers
            }
            else if (data.ExecutionType == ActionExecutionType.Composite)
            {
-                if (executionContext.FinalizeContext == null)
-                {
-                    handler = HostContext.CreateService<ICompositeActionHandler>();
-                    (handler as ICompositeActionHandler).Data = data as CompositeActionExecutionData;
-                }
-                else
-                {
-                    handler = HostContext.CreateService<ICompositeActionOutputHandler>();
-                    (handler as ICompositeActionOutputHandler).Data = data as CompositeActionExecutionData;
-                }
+                // TODO
+                // Runner plugin
+                handler = HostContext.CreateService<ICompositeActionHandler>();
+                // handler = CompositeHandler;
+                (handler as ICompositeActionHandler).Data = data as CompositeActionExecutionData;
            }
            else
            {
--- a/src/Runner.Worker/JobExtension.cs
+++ b/src/Runner.Worker/JobExtension.cs
@@ -64,20 +64,6 @@ namespace GitHub.Runner.Worker
                    context.Debug($"Starting: Set up job");
                    context.Output($"Current runner version: '{BuildConstants.RunnerPackage.Version}'");

-                    var setting = HostContext.GetService<IConfigurationStore>().GetSettings();
-                    var credFile = HostContext.GetConfigFile(WellKnownConfigFile.Credentials);
-                    if (File.Exists(credFile))
-                    {
-                        var credData = IOUtil.LoadObject<CredentialData>(credFile);
-                        if (credData != null &&
-                            credData.Data.TryGetValue("clientId", out var clientId))
-                        {
-                            // print out HostName for self-hosted runner
-                            context.Output($"Runner name: '{setting.AgentName}'");
-                            context.Output($"Machine name: '{Environment.MachineName}'");
-                        }
-                    }
-
                    var setupInfoFile = HostContext.GetConfigFile(WellKnownConfigFile.SetupInfo);
                    if (File.Exists(setupInfoFile))
                    {
@@ -253,6 +239,7 @@ namespace GitHub.Runner.Worker
                            }

                            actionRunner.TryEvaluateDisplayName(contextData, context);
+
                            jobSteps.Add(actionRunner);

                            if (prepareResult.PreStepTracker.TryGetValue(step.Id, out var preStep))
@@ -298,6 +285,13 @@ namespace GitHub.Runner.Worker
                            intraActionStates.TryGetValue(actionStep.Action.Id, out var intraActionState);
                            actionStep.ExecutionContext = jobContext.CreateChild(actionStep.Action.Id, actionStep.DisplayName, actionStep.Action.Name, actionStep.Action.ScopeName, actionStep.Action.ContextName, intraActionState);
                        }
+
+                        // TODO: Maybe add EvaluateStep stuff here too?
+                        // TODO: INSERT CONVERTSTEPS FUNCTION HERE FOR EVALUATING STEPS
+                            // Maybe we don't need to do this here do we need to initialize the job?
+                            // context.Debug("Evaluating job evaluating steps");
+                            // var stepsEvaluation = templateEvaluator.EvaluateSteps(contextData, context, context.ExpressionFunctions);
+                            ////////
                    }

                    List<IStep> steps = new List<IStep>();
--- a/src/Runner.Worker/JobRunner.cs
+++ b/src/Runner.Worker/JobRunner.cs
@@ -60,9 +60,11 @@ namespace GitHub.Runner.Worker
            {
                // Create the job execution context.
                jobContext = HostContext.CreateService<IExecutionContext>();
+                // HERE
                jobContext.InitializeJob(message, jobRequestCancellationToken);
                Trace.Info("Starting the job execution context.");
                jobContext.Start();
+                // User will see this message too
                jobContext.Debug($"Starting: {message.JobDisplayName}");

                runnerShutdownRegistration = HostContext.RunnerShutdownToken.Register(() =>
@@ -152,7 +154,7 @@ namespace GitHub.Runner.Worker
                {
                    foreach (var step in jobSteps)
                    {
-                        jobContext.JobSteps.Add(step);
+                        jobContext.JobSteps.Enqueue(step);
                    }

                    await stepsRunner.RunAsync(jobContext);
--- a/src/Runner.Worker/StepsRunner.cs
+++ b/src/Runner.Worker/StepsRunner.cs
@@ -59,14 +59,14 @@ namespace GitHub.Runner.Worker
                    checkPostJobActions = true;
                    while (jobContext.PostJobSteps.TryPop(out var postStep))
                    {
-                        jobContext.JobSteps.Add(postStep);
+                        jobContext.JobSteps.Enqueue(postStep);
                    }

                    continue;
                }

-                var step = jobContext.JobSteps[0];
-                jobContext.JobSteps.RemoveAt(0);
+                var step = jobContext.JobSteps.Dequeue();
+                var nextStep = jobContext.JobSteps.Count > 0 ? jobContext.JobSteps.Peek() : null;

                Trace.Info($"Processing step: DisplayName='{step.DisplayName}'");
                ArgUtil.NotNull(step.ExecutionContext, nameof(step.ExecutionContext));
@@ -82,170 +82,155 @@ namespace GitHub.Runner.Worker
                step.ExecutionContext.ExpressionFunctions.Add(new FunctionInfo<SuccessFunction>(PipelineTemplateConstants.Success, 0, 0));
                step.ExecutionContext.ExpressionFunctions.Add(new FunctionInfo<HashFilesFunction>(PipelineTemplateConstants.HashFiles, 1, byte.MaxValue));

-                step.ExecutionContext.ExpressionValues["steps"] = step.ExecutionContext.StepsContext.GetScope(step.ExecutionContext.ScopeName);
-
-                // Populate env context for each step
-                Trace.Info("Initialize Env context for step");
+                // Initialize scope
+                if (InitializeScope(step, scopeInputs))
+                {
+                    // Populate env context for each step
+                    Trace.Info("Initialize Env context for step");
 #if OS_WINDOWS
-                var envContext = new DictionaryContextData();
+                    var envContext = new DictionaryContextData();
 #else
-                var envContext = new CaseSensitiveDictionaryContextData();
+                    var envContext = new CaseSensitiveDictionaryContextData();
 #endif
-
-                // Global env
-                foreach (var pair in step.ExecutionContext.EnvironmentVariables)
-                {
-                    envContext[pair.Key] = new StringContextData(pair.Value ?? string.Empty);
-                }
-
-                // Stomps over with outside step env
-                if (step.ExecutionContext.ExpressionValues.TryGetValue("env", out var envContextData))
-                {
-#if OS_WINDOWS
-                    var dict = envContextData as DictionaryContextData;
-#else
-                    var dict = envContextData as CaseSensitiveDictionaryContextData;
-#endif
-                    foreach (var pair in dict)
+                    step.ExecutionContext.ExpressionValues["env"] = envContext;
+                    foreach (var pair in step.ExecutionContext.EnvironmentVariables)
                    {
-                        envContext[pair.Key] = pair.Value;
+                        envContext[pair.Key] = new StringContextData(pair.Value ?? string.Empty);
                    }
-                }

-                step.ExecutionContext.ExpressionValues["env"] = envContext;
-
-                bool evaluateStepEnvFailed = false;
-                if (step is IActionRunner actionStep)
-                {
-                    // Set GITHUB_ACTION
-                    step.ExecutionContext.SetGitHubContext("action", actionStep.Action.Name);
-
-                    try
+                    bool evaluateStepEnvFailed = false;
+                    if (step is IActionRunner actionStep)
                    {
-                        // Evaluate and merge action's env block to env context
-                        var templateEvaluator = step.ExecutionContext.ToPipelineTemplateEvaluator();
-                        var actionEnvironment = templateEvaluator.EvaluateStepEnvironment(actionStep.Action.Environment, step.ExecutionContext.ExpressionValues, step.ExecutionContext.ExpressionFunctions, VarUtil.EnvironmentVariableKeyComparer);
-                        foreach (var env in actionEnvironment)
+                        // Set GITHUB_ACTION
+                        step.ExecutionContext.SetGitHubContext("action", actionStep.Action.Name);
+
+                        try
                        {
-                            envContext[env.Key] = new StringContextData(env.Value ?? string.Empty);
-                        }
-                    }
-                    catch (Exception ex)
-                    {
-                        // fail the step since there is an evaluate error.
-                        Trace.Info("Caught exception from expression for step.env");
-                        evaluateStepEnvFailed = true;
-                        step.ExecutionContext.Error(ex);
-                        CompleteStep(step, TaskResult.Failed);
-                    }
-                }
-
-                if (!evaluateStepEnvFailed)
-                {
-                    try
-                    {
-                        // Register job cancellation call back only if job cancellation token not been fire before each step run
-                        if (!jobContext.CancellationToken.IsCancellationRequested)
-                        {
-                            // Test the condition again. The job was canceled after the condition was originally evaluated.
-                            jobCancelRegister = jobContext.CancellationToken.Register(() =>
+                            // Evaluate and merge action's env block to env context
+                            var templateEvaluator = step.ExecutionContext.ToPipelineTemplateEvaluator();
+                            var actionEnvironment = templateEvaluator.EvaluateStepEnvironment(actionStep.Action.Environment, step.ExecutionContext.ExpressionValues, step.ExecutionContext.ExpressionFunctions, VarUtil.EnvironmentVariableKeyComparer);
+                            foreach (var env in actionEnvironment)
                            {
-                                // mark job as cancelled
-                                jobContext.Result = TaskResult.Canceled;
-                                jobContext.JobContext.Status = jobContext.Result?.ToActionResult();
-
-                                step.ExecutionContext.Debug($"Re-evaluate condition on job cancellation for step: '{step.DisplayName}'.");
-                                var conditionReTestTraceWriter = new ConditionTraceWriter(Trace, null); // host tracing only
-                                var conditionReTestResult = false;
-                                if (HostContext.RunnerShutdownToken.IsCancellationRequested)
-                                {
-                                    step.ExecutionContext.Debug($"Skip Re-evaluate condition on runner shutdown.");
-                                }
-                                else
-                                {
-                                    try
-                                    {
-                                        var templateEvaluator = step.ExecutionContext.ToPipelineTemplateEvaluator(conditionReTestTraceWriter);
-                                        var condition = new BasicExpressionToken(null, null, null, step.Condition);
-                                        conditionReTestResult = templateEvaluator.EvaluateStepIf(condition, step.ExecutionContext.ExpressionValues, step.ExecutionContext.ExpressionFunctions, step.ExecutionContext.ToExpressionState());
-                                    }
-                                    catch (Exception ex)
-                                    {
-                                        // Cancel the step since we get exception while re-evaluate step condition.
-                                        Trace.Info("Caught exception from expression when re-test condition on job cancellation.");
-                                        step.ExecutionContext.Error(ex);
-                                    }
-                                }
-
-                                if (!conditionReTestResult)
-                                {
-                                    // Cancel the step.
-                                    Trace.Info("Cancel current running step.");
-                                    step.ExecutionContext.CancelToken();
-                                }
-                            });
-                        }
-                        else
-                        {
-                            if (jobContext.Result != TaskResult.Canceled)
-                            {
-                                // mark job as cancelled
-                                jobContext.Result = TaskResult.Canceled;
-                                jobContext.JobContext.Status = jobContext.Result?.ToActionResult();
+                                envContext[env.Key] = new StringContextData(env.Value ?? string.Empty);
                            }
                        }
-
-                        // Evaluate condition.
-                        step.ExecutionContext.Debug($"Evaluating condition for step: '{step.DisplayName}'");
-                        var conditionTraceWriter = new ConditionTraceWriter(Trace, step.ExecutionContext);
-                        var conditionResult = false;
-                        var conditionEvaluateError = default(Exception);
-                        if (HostContext.RunnerShutdownToken.IsCancellationRequested)
-                        {
-                            step.ExecutionContext.Debug($"Skip evaluate condition on runner shutdown.");
-                        }
-                        else
-                        {
-                            try
-                            {
-                                var templateEvaluator = step.ExecutionContext.ToPipelineTemplateEvaluator(conditionTraceWriter);
-                                var condition = new BasicExpressionToken(null, null, null, step.Condition);
-                                conditionResult = templateEvaluator.EvaluateStepIf(condition, step.ExecutionContext.ExpressionValues, step.ExecutionContext.ExpressionFunctions, step.ExecutionContext.ToExpressionState());
-                            }
-                            catch (Exception ex)
-                            {
-                                Trace.Info("Caught exception from expression.");
-                                Trace.Error(ex);
-                                conditionEvaluateError = ex;
-                            }
-                        }
-
-                        // no evaluate error but condition is false
-                        if (!conditionResult && conditionEvaluateError == null)
-                        {
-                            // Condition == false
-                            Trace.Info("Skipping step due to condition evaluation.");
-                            CompleteStep(step, TaskResult.Skipped, resultCode: conditionTraceWriter.Trace);
-                        }
-                        else if (conditionEvaluateError != null)
+                        catch (Exception ex)
                        {
                            // fail the step since there is an evaluate error.
-                            step.ExecutionContext.Error(conditionEvaluateError);
-                            CompleteStep(step, TaskResult.Failed);
-                        }
-                        else
-                        {
-                            // Run the step.
-                            await RunStepAsync(step, jobContext.CancellationToken);
-                            CompleteStep(step);
+                            Trace.Info("Caught exception from expression for step.env");
+                            evaluateStepEnvFailed = true;
+                            step.ExecutionContext.Error(ex);
+                            CompleteStep(step, nextStep, TaskResult.Failed);
                        }
                    }
-                    finally
+
+                    if (!evaluateStepEnvFailed)
                    {
-                        if (jobCancelRegister != null)
+                        try
                        {
-                            jobCancelRegister?.Dispose();
-                            jobCancelRegister = null;
+                            // Register job cancellation call back only if job cancellation token not been fire before each step run
+                            if (!jobContext.CancellationToken.IsCancellationRequested)
+                            {
+                                // Test the condition again. The job was canceled after the condition was originally evaluated.
+                                jobCancelRegister = jobContext.CancellationToken.Register(() =>
+                                {
+                                    // mark job as cancelled
+                                    jobContext.Result = TaskResult.Canceled;
+                                    jobContext.JobContext.Status = jobContext.Result?.ToActionResult();
+
+                                    step.ExecutionContext.Debug($"Re-evaluate condition on job cancellation for step: '{step.DisplayName}'.");
+                                    var conditionReTestTraceWriter = new ConditionTraceWriter(Trace, null); // host tracing only
+                                    var conditionReTestResult = false;
+                                    if (HostContext.RunnerShutdownToken.IsCancellationRequested)
+                                    {
+                                        step.ExecutionContext.Debug($"Skip Re-evaluate condition on runner shutdown.");
+                                    }
+                                    else
+                                    {
+                                        try
+                                        {
+                                            var templateEvaluator = step.ExecutionContext.ToPipelineTemplateEvaluator(conditionReTestTraceWriter);
+                                            var condition = new BasicExpressionToken(null, null, null, step.Condition);
+                                            conditionReTestResult = templateEvaluator.EvaluateStepIf(condition, step.ExecutionContext.ExpressionValues, step.ExecutionContext.ExpressionFunctions, step.ExecutionContext.ToExpressionState());
+                                        }
+                                        catch (Exception ex)
+                                        {
+                                            // Cancel the step since we get exception while re-evaluate step condition.
+                                            Trace.Info("Caught exception from expression when re-test condition on job cancellation.");
+                                            step.ExecutionContext.Error(ex);
+                                        }
+                                    }
+
+                                    if (!conditionReTestResult)
+                                    {
+                                        // Cancel the step.
+                                        Trace.Info("Cancel current running step.");
+                                        step.ExecutionContext.CancelToken();
+                                    }
+                                });
+                            }
+                            else
+                            {
+                                if (jobContext.Result != TaskResult.Canceled)
+                                {
+                                    // mark job as cancelled
+                                    jobContext.Result = TaskResult.Canceled;
+                                    jobContext.JobContext.Status = jobContext.Result?.ToActionResult();
+                                }
+                            }
+
+                            // Evaluate condition.
+                            step.ExecutionContext.Debug($"Evaluating condition for step: '{step.DisplayName}'");
+                            var conditionTraceWriter = new ConditionTraceWriter(Trace, step.ExecutionContext);
+                            var conditionResult = false;
+                            var conditionEvaluateError = default(Exception);
+                            if (HostContext.RunnerShutdownToken.IsCancellationRequested)
+                            {
+                                step.ExecutionContext.Debug($"Skip evaluate condition on runner shutdown.");
+                            }
+                            else
+                            {
+                                try
+                                {
+                                    var templateEvaluator = step.ExecutionContext.ToPipelineTemplateEvaluator(conditionTraceWriter);
+                                    var condition = new BasicExpressionToken(null, null, null, step.Condition);
+                                    conditionResult = templateEvaluator.EvaluateStepIf(condition, step.ExecutionContext.ExpressionValues, step.ExecutionContext.ExpressionFunctions, step.ExecutionContext.ToExpressionState());
+                                }
+                                catch (Exception ex)
+                                {
+                                    Trace.Info("Caught exception from expression.");
+                                    Trace.Error(ex);
+                                    conditionEvaluateError = ex;
+                                }
+                            }
+
+                            // no evaluate error but condition is false
+                            if (!conditionResult && conditionEvaluateError == null)
+                            {
+                                // Condition == false
+                                Trace.Info("Skipping step due to condition evaluation.");
+                                CompleteStep(step, nextStep, TaskResult.Skipped, resultCode: conditionTraceWriter.Trace);
+                            }
+                            else if (conditionEvaluateError != null)
+                            {
+                                // fail the step since there is an evaluate error.
+                                step.ExecutionContext.Error(conditionEvaluateError);
+                                CompleteStep(step, nextStep, TaskResult.Failed);
+                            }
+                            else
+                            {
+                                // Run the step.
+                                await RunStepAsync(step, jobContext.CancellationToken);
+                                CompleteStep(step, nextStep);
+                            }
+                        }
+                        finally
+                        {
+                            if (jobCancelRegister != null)
+                            {
+                                jobCancelRegister?.Dispose();
+                                jobCancelRegister = null;
+                            }
                        }
                    }
                }
@@ -399,9 +384,117 @@ namespace GitHub.Runner.Worker
            step.ExecutionContext.Debug($"Finishing: {step.DisplayName}");
        }

-        private void CompleteStep(IStep step, TaskResult? result = null, string resultCode = null)
+        private bool InitializeScope(IStep step, Dictionary<string, PipelineContextData> scopeInputs)
        {
            var executionContext = step.ExecutionContext;
+            var stepsContext = executionContext.StepsContext;
+            if (!string.IsNullOrEmpty(executionContext.ScopeName))
+            {
+                // Gather uninitialized current and ancestor scopes
+                var scope = executionContext.Scopes[executionContext.ScopeName];
+                var scopesToInitialize = default(Stack<ContextScope>);
+                while (scope != null && !scopeInputs.ContainsKey(scope.Name))
+                {
+                    if (scopesToInitialize == null)
+                    {
+                        scopesToInitialize = new Stack<ContextScope>();
+                    }
+                    scopesToInitialize.Push(scope);
+                    scope = string.IsNullOrEmpty(scope.ParentName) ? null : executionContext.Scopes[scope.ParentName];
+                }
+
+                // Initialize current and ancestor scopes
+                while (scopesToInitialize?.Count > 0)
+                {
+                    scope = scopesToInitialize.Pop();
+                    executionContext.Debug($"Initializing scope '{scope.Name}'");
+                    executionContext.ExpressionValues["steps"] = stepsContext.GetScope(scope.ParentName);
+                    executionContext.ExpressionValues["inputs"] = !String.IsNullOrEmpty(scope.ParentName) ? scopeInputs[scope.ParentName] : null;
+                    var templateEvaluator = executionContext.ToPipelineTemplateEvaluator();
+                    var inputs = default(DictionaryContextData);
+                    try
+                    {
+                        inputs = templateEvaluator.EvaluateStepScopeInputs(scope.Inputs, executionContext.ExpressionValues, executionContext.ExpressionFunctions);
+                    }
+                    catch (Exception ex)
+                    {
+                        Trace.Info($"Caught exception from initialize scope '{scope.Name}'");
+                        Trace.Error(ex);
+                        executionContext.Error(ex);
+                        executionContext.Complete(TaskResult.Failed);
+                        return false;
+                    }
+
+                    scopeInputs[scope.Name] = inputs;
+                }
+            }
+
+            // Setup expression values
+            var scopeName = executionContext.ScopeName;
+            executionContext.ExpressionValues["steps"] = stepsContext.GetScope(scopeName);
+            executionContext.ExpressionValues["inputs"] = string.IsNullOrEmpty(scopeName) ? null : scopeInputs[scopeName];
+
+            return true;
+        }
+
+        private void CompleteStep(IStep step, IStep nextStep, TaskResult? result = null, string resultCode = null)
+        {
+            var executionContext = step.ExecutionContext;
+            if (!string.IsNullOrEmpty(executionContext.ScopeName))
+            {
+                // Gather current and ancestor scopes to finalize
+                var scope = executionContext.Scopes[executionContext.ScopeName];
+                var scopesToFinalize = default(Queue<ContextScope>);
+                var nextStepScopeName = nextStep?.ExecutionContext.ScopeName;
+                while (scope != null &&
+                    !string.Equals(nextStepScopeName, scope.Name, StringComparison.OrdinalIgnoreCase) &&
+                    !(nextStepScopeName ?? string.Empty).StartsWith($"{scope.Name}.", StringComparison.OrdinalIgnoreCase))
+                {
+                    if (scopesToFinalize == null)
+                    {
+                        scopesToFinalize = new Queue<ContextScope>();
+                    }
+                    scopesToFinalize.Enqueue(scope);
+                    scope = string.IsNullOrEmpty(scope.ParentName) ? null : executionContext.Scopes[scope.ParentName];
+                }
+
+                // Finalize current and ancestor scopes
+                var stepsContext = step.ExecutionContext.StepsContext;
+                while (scopesToFinalize?.Count > 0)
+                {
+                    scope = scopesToFinalize.Dequeue();
+                    executionContext.Debug($"Finalizing scope '{scope.Name}'");
+                    executionContext.ExpressionValues["steps"] = stepsContext.GetScope(scope.Name);
+                    executionContext.ExpressionValues["inputs"] = null;
+                    var templateEvaluator = executionContext.ToPipelineTemplateEvaluator();
+                    var outputs = default(DictionaryContextData);
+                    try
+                    {
+                        outputs = templateEvaluator.EvaluateStepScopeOutputs(scope.Outputs, executionContext.ExpressionValues, executionContext.ExpressionFunctions);
+                    }
+                    catch (Exception ex)
+                    {
+                        Trace.Info($"Caught exception from finalize scope '{scope.Name}'");
+                        Trace.Error(ex);
+                        executionContext.Error(ex);
+                        executionContext.Complete(TaskResult.Failed);
+                        return;
+                    }
+
+                    if (outputs?.Count > 0)
+                    {
+                        var parentScopeName = scope.ParentName;
+                        var contextName = scope.ContextName;
+                        foreach (var pair in outputs)
+                        {
+                            var outputName = pair.Key;
+                            var outputValue = pair.Value.ToString();
+                            stepsContext.SetOutput(parentScopeName, contextName, outputName, outputValue, out var reference);
+                            executionContext.Debug($"{reference}='{outputValue}'");
+                        }
+                    }
+                }
+            }

            executionContext.Complete(result, resultCode: resultCode);
        }
--- a/src/Runner.Worker/action_yaml.json
+++ b/src/Runner.Worker/action_yaml.json
@@ -7,8 +7,7 @@
                    "name": "string",
                    "description": "string",
                    "inputs": "inputs",
-                    "runs": "runs",
-                    "outputs": "outputs"
+                    "runs": "runs"
                },
                "loose-key-type": "non-empty-string",
                "loose-value-type": "any"
@@ -29,20 +28,6 @@
                "loose-value-type": "any"
            }
        },
-        "outputs": {
-            "mapping": {
-                "loose-key-type": "non-empty-string",
-                "loose-value-type": "outputs-attributes"
-            }
-        },
-        "outputs-attributes": {
-            "mapping": {
-                "properties": {
-                    "description": "string",
-                    "value": "output-value"
-                }
-            }
-        },
        "runs": {
            "one-of": [
                "container-runs",
@@ -100,27 +85,28 @@
            }
        },
        "composite-runs": {
-            "mapping": {
+            "mapping" : {
                "properties": {
                    "using": "non-empty-string",
-                    "steps": "composite-steps"
+                    "steps": "steps"
                }
            }
        },
-        "composite-steps": {
-            "context": [
-                "github",
-                "strategy",
-                "matrix",
-                "steps",
-                "inputs",
-                "job",
-                "runner",
-                "env",
-                "hashFiles(1,255)"
-            ],
+        "steps": {
            "sequence": {
-                "item-type": "any"
+                "item-type": "steps-item"
+            }
+        },
+        "steps-item": {
+            "one-of": [
+                "run-step"
+            ]
+        },
+        "run-step": {
+            "mapping": {
+              "properties": {
+                "run": "non-empty-string"
+              }
            }
        },
        "container-runs-context": {
@@ -129,19 +115,6 @@
            ],
            "string": {}
        },
-        "output-value": {
-            "context": [
-                "github",
-                "strategy",
-                "matrix",
-                "steps",
-                "inputs",
-                "job",
-                "runner",
-                "env"
-            ],
-            "string": {}
-        },
        "input-default-context": {
            "context": [
                "github",
--- a/src/Sdk/DTPipelines/Pipelines/ContextData/NumberContextData.cs
+++ b/src/Sdk/DTPipelines/Pipelines/ContextData/NumberContextData.cs
@@ -42,12 +42,7 @@ namespace GitHub.DistributedTask.Pipelines.ContextData
            var floored = Math.Floor(m_value);
            if (m_value == floored && m_value <= (Double)Int32.MaxValue && m_value >= (Double)Int32.MinValue)
            {
-                var flooredInt = (Int32)floored;
-                return (JToken)flooredInt;
-            }
-            else if (m_value == floored && m_value <= (Double)Int64.MaxValue && m_value >= (Double)Int64.MinValue)
-            {
-                var flooredInt = (Int64)floored;
+                Int32 flooredInt = (Int32)floored;
                return (JToken)flooredInt;
            }
            else
--- a/src/Sdk/DTPipelines/Pipelines/ObjectTemplating/PipelineTemplateConstants.cs
+++ b/src/Sdk/DTPipelines/Pipelines/ObjectTemplating/PipelineTemplateConstants.cs
@@ -65,7 +65,6 @@ namespace GitHub.DistributedTask.Pipelines.ObjectTemplating
        public const String StepEnv = "step-env";
        public const String StepIfResult = "step-if-result";
        public const String Steps = "steps";
-        public const String StepsInTemplate = "steps-in-template";
        public const String StepsScopeInputs = "steps-scope-inputs";
        public const String StepsScopeOutputs = "steps-scope-outputs";
        public const String StepsTemplateRoot = "steps-template-root";
--- a/src/Sdk/DTPipelines/Pipelines/ObjectTemplating/PipelineTemplateConverter.cs
+++ b/src/Sdk/DTPipelines/Pipelines/ObjectTemplating/PipelineTemplateConverter.cs
@@ -16,6 +16,7 @@ namespace GitHub.DistributedTask.Pipelines.ObjectTemplating
 {
    internal static class PipelineTemplateConverter
    {
+
        internal static Boolean ConvertToIfResult(
            TemplateContext context,
            TemplateToken ifResult)
--- a/src/Sdk/DTPipelines/Pipelines/ObjectTemplating/PipelineTemplateEvaluator.cs
+++ b/src/Sdk/DTPipelines/Pipelines/ObjectTemplating/PipelineTemplateEvaluator.cs
@@ -159,17 +159,29 @@ namespace GitHub.DistributedTask.Pipelines.ObjectTemplating
            return result;
        }

-        public List<ActionStep> LoadCompositeSteps(
-            TemplateToken token)
+        // TODO: Add function here that says Evaluate Steps but it will return whatever ConvertToSteps returns.
+        // return: List<ActionStep>
+        // used to be evaluatesteps
+        public List<ActionStep> LoadSteps(
+            TemplateToken token,
+            DictionaryContextData contextData,
+            IList<IFunctionInfo> expressionFunctions
+        )
        {
+            // Similar to EvaluateStepDisplayName() except that we pass in PipelineTemplateConstants.Steps as the type for evaluation
            var result = default(List<ActionStep>);
+
            if (token != null && token.Type != TokenType.Null)
            {
-                var context = CreateContext(null, null, setMissingContext: false);
+                var context = CreateContext(contextData, expressionFunctions, setMissingContext: false);
+                // This will keep it from preexpanding
                // TODO: we might want to to have a bool to prevent it from filling in with missing context w/ dummy variables
+                // context.ExpressionFunctions.Clear();
+                // context.ExpressionValues.Clear();
+
                try
                {
-                    token = TemplateEvaluator.Evaluate(context, PipelineTemplateConstants.StepsInTemplate, token, 0, null, omitHeader: true);
+                    token = TemplateEvaluator.Evaluate(context, PipelineTemplateConstants.Steps, token, 0, null, omitHeader: true);
                    context.Errors.Check();
                    result = PipelineTemplateConverter.ConvertToSteps(context, token);
                }
@@ -180,6 +192,7 @@ namespace GitHub.DistributedTask.Pipelines.ObjectTemplating

                context.Errors.Check();
            }
+
            return result;
        }

--- a/src/Sdk/WebApi/WebApi/OAuth/VssOAuthTokenResponse.cs
+++ b/src/Sdk/WebApi/WebApi/OAuth/VssOAuthTokenResponse.cs
@@ -39,7 +39,7 @@ namespace GitHub.Services.OAuth
        /// <summary>
        /// Gets or sets the error description for the response.
        /// </summary>
-        [DataMember(Name = "error_description", EmitDefaultValue = false)]
+        [DataMember(Name = "errordescription", EmitDefaultValue = false)]
        public String ErrorDescription
        {
            get;
--- a/src/Test/L0/Util/WhichUtilL0.cs
+++ b/src/Test/L0/Util/WhichUtilL0.cs
@@ -70,24 +70,5 @@ namespace GitHub.Runner.Common.Tests.Util
                }
            }
        }
-
-        [Fact]
-        [Trait("Level", "L0")]
-        [Trait("Category", "Common")]
-        public void WhichHandleFullyQualifiedPath()
-        {
-            using (TestHostContext hc = new TestHostContext(this))
-            {
-                //Arrange
-                Tracing trace = hc.GetTrace();
-
-                // Act.
-                var gitPath = WhichUtil.Which("git", require: true, trace: trace);
-                var gitPath2 = WhichUtil.Which(gitPath, require: true, trace: trace);
-
-                // Assert.
-                Assert.Equal(gitPath, gitPath2);
-            }
-        }
    }
 }
--- a/src/Test/L0/Worker/ActionManagerL0.cs
+++ b/src/Test/L0/Worker/ActionManagerL0.cs
@@ -3584,7 +3584,6 @@ runs:
            _ec.Setup(x => x.Variables).Returns(new Variables(_hc, variables));
            _ec.Setup(x => x.ExpressionValues).Returns(new DictionaryContextData());
            _ec.Setup(x => x.ExpressionFunctions).Returns(new List<IFunctionInfo>());
-            _ec.Setup(x => x.FileTable).Returns(new List<String>());
            _ec.Setup(x => x.Plan).Returns(new TaskOrchestrationPlanReference());
            _ec.Setup(x => x.Write(It.IsAny<string>(), It.IsAny<string>())).Callback((string tag, string message) => { _hc.GetTrace().Info($"[{tag}]{message}"); });
            _ec.Setup(x => x.AddIssue(It.IsAny<Issue>(), It.IsAny<string>())).Callback((Issue issue, string message) => { _hc.GetTrace().Info($"[{issue.Type}]{issue.Message ?? message}"); });
@@ -3608,8 +3607,8 @@ runs:
                        {
                            NameWithOwner = action.NameWithOwner,
                            Ref = action.Ref,
-                            TarballUrl = $"https://api.github.com/repos/{action.NameWithOwner}/tarball/{action.Ref}",
-                            ZipballUrl = $"https://api.github.com/repos/{action.NameWithOwner}/zipball/{action.Ref}",
+                            TarballUrl = $"<GITHUB_API_URL>/repos/{action.NameWithOwner}/tarball/{action.Ref}",
+                            ZipballUrl = $"<GITHUB_API_URL>/repos/{action.NameWithOwner}/zipball/{action.Ref}",
                        };
                    }
                    return Task.FromResult(result);
--- a/src/Test/L0/Worker/ActionManifestManagerL0.cs
+++ b/src/Test/L0/Worker/ActionManifestManagerL0.cs
@@ -759,7 +759,6 @@ namespace GitHub.Runner.Common.Tests.Worker
            _ec.Setup(x => x.Variables).Returns(new Variables(_hc, new Dictionary<string, VariableValue>()));
            _ec.Setup(x => x.ExpressionValues).Returns(new DictionaryContextData());
            _ec.Setup(x => x.ExpressionFunctions).Returns(new List<IFunctionInfo>());
-            _ec.Setup(x => x.FileTable).Returns(new List<String>());
            _ec.Setup(x => x.Write(It.IsAny<string>(), It.IsAny<string>())).Callback((string tag, string message) => { _hc.GetTrace().Info($"{tag}{message}"); });
            _ec.Setup(x => x.AddIssue(It.IsAny<Issue>(), It.IsAny<string>())).Callback((Issue issue, string message) => { _hc.GetTrace().Info($"[{issue.Type}]{issue.Message ?? message}"); });
        }
--- a/src/Test/L0/Worker/ActionRunnerL0.cs
+++ b/src/Test/L0/Worker/ActionRunnerL0.cs
@@ -379,7 +379,6 @@ namespace GitHub.Runner.Common.Tests.Worker
            _ec.Setup(x => x.ExpressionFunctions).Returns(new List<IFunctionInfo>());
            _ec.Setup(x => x.IntraActionState).Returns(new Dictionary<string, string>());
            _ec.Setup(x => x.EnvironmentVariables).Returns(new Dictionary<string, string>());
-            _ec.Setup(x => x.FileTable).Returns(new List<String>());
            _ec.Setup(x => x.SetGitHubContext(It.IsAny<string>(), It.IsAny<string>()));
            _ec.Setup(x => x.GetGitHubContext(It.IsAny<string>())).Returns("{\"foo\":\"bar\"}");
            _ec.Setup(x => x.CancellationToken).Returns(_ecTokenSource.Token);
--- a/src/Test/L0/Worker/StepsRunnerL0.cs
+++ b/src/Test/L0/Worker/StepsRunnerL0.cs
@@ -80,7 +80,7 @@ namespace GitHub.Runner.Common.Tests.Worker
                {
                    _ec.Object.Result = null;

-                    _ec.Setup(x => x.JobSteps).Returns(new List<IStep>(variableSet.Select(x => x.Object).ToList()));
+                    _ec.Setup(x => x.JobSteps).Returns(new Queue<IStep>(variableSet.Select(x => x.Object).ToList()));

                    // Act.
                    await _stepsRunner.RunAsync(jobContext: _ec.Object);
@@ -115,7 +115,7 @@ namespace GitHub.Runner.Common.Tests.Worker
                {
                    _ec.Object.Result = null;

-                    _ec.Setup(x => x.JobSteps).Returns(new List<IStep>(variableSet.Select(x => x.Object).ToList()));
+                    _ec.Setup(x => x.JobSteps).Returns(new Queue<IStep>(variableSet.Select(x => x.Object).ToList()));

                    // Act.
                    await _stepsRunner.RunAsync(jobContext: _ec.Object);
@@ -154,7 +154,7 @@ namespace GitHub.Runner.Common.Tests.Worker
                {
                    _ec.Object.Result = null;

-                    _ec.Setup(x => x.JobSteps).Returns(new List<IStep>(variableSet.Steps.Select(x => x.Object).ToList()));
+                    _ec.Setup(x => x.JobSteps).Returns(new Queue<IStep>(variableSet.Steps.Select(x => x.Object).ToList()));

                    // Act.
                    await _stepsRunner.RunAsync(jobContext: _ec.Object);
@@ -208,7 +208,7 @@ namespace GitHub.Runner.Common.Tests.Worker
                {
                    _ec.Object.Result = null;

-                    _ec.Setup(x => x.JobSteps).Returns(new List<IStep>(variableSet.Steps.Select(x => x.Object).ToList()));
+                    _ec.Setup(x => x.JobSteps).Returns(new Queue<IStep>(variableSet.Steps.Select(x => x.Object).ToList()));

                    // Act.
                    await _stepsRunner.RunAsync(jobContext: _ec.Object);
@@ -287,7 +287,7 @@ namespace GitHub.Runner.Common.Tests.Worker
                {
                    _ec.Object.Result = null;

-                    _ec.Setup(x => x.JobSteps).Returns(new List<IStep>(variableSet.Steps.Select(x => x.Object).ToList()));
+                    _ec.Setup(x => x.JobSteps).Returns(new Queue<IStep>(variableSet.Steps.Select(x => x.Object).ToList()));

                    // Act.
                    await _stepsRunner.RunAsync(jobContext: _ec.Object);
@@ -330,7 +330,7 @@ namespace GitHub.Runner.Common.Tests.Worker
                {
                    _ec.Object.Result = null;

-                    _ec.Setup(x => x.JobSteps).Returns(new List<IStep>(variableSet.Step.Select(x => x.Object).ToList()));
+                    _ec.Setup(x => x.JobSteps).Returns(new Queue<IStep>(variableSet.Step.Select(x => x.Object).ToList()));

                    // Act.
                    await _stepsRunner.RunAsync(jobContext: _ec.Object);
@@ -361,7 +361,7 @@ namespace GitHub.Runner.Common.Tests.Worker
                {
                    _ec.Object.Result = null;

-                    _ec.Setup(x => x.JobSteps).Returns(new List<IStep>(variableSet.Select(x => x.Object).ToList()));
+                    _ec.Setup(x => x.JobSteps).Returns(new Queue<IStep>(variableSet.Select(x => x.Object).ToList()));

                    // Act.
                    await _stepsRunner.RunAsync(jobContext: _ec.Object);
@@ -391,7 +391,7 @@ namespace GitHub.Runner.Common.Tests.Worker
                {
                    _ec.Object.Result = null;

-                    _ec.Setup(x => x.JobSteps).Returns(new List<IStep>(variableSet.Select(x => x.Object).ToList()));
+                    _ec.Setup(x => x.JobSteps).Returns(new Queue<IStep>(variableSet.Select(x => x.Object).ToList()));

                    // Act.
                    await _stepsRunner.RunAsync(jobContext: _ec.Object);
@@ -417,7 +417,7 @@ namespace GitHub.Runner.Common.Tests.Worker

                _ec.Object.Result = null;

-                _ec.Setup(x => x.JobSteps).Returns(new List<IStep>(new[] { step1.Object }));
+                _ec.Setup(x => x.JobSteps).Returns(new Queue<IStep>(new[] { step1.Object }));

                // Act.
                await _stepsRunner.RunAsync(jobContext: _ec.Object);
@@ -426,11 +426,11 @@ namespace GitHub.Runner.Common.Tests.Worker
                Assert.Equal(TaskResult.Succeeded, _ec.Object.Result ?? TaskResult.Succeeded);

 #if OS_WINDOWS
-                Assert.Equal("100", step1.Object.ExecutionContext.ExpressionValues["env"].AssertDictionary("env")["env1"].AssertString("100"));
-                Assert.Equal("github_actions", step1.Object.ExecutionContext.ExpressionValues["env"].AssertDictionary("env")["env2"].AssertString("github_actions"));
+                Assert.Equal("100", _ec.Object.ExpressionValues["env"].AssertDictionary("env")["env1"].AssertString("100"));
+                Assert.Equal("github_actions", _ec.Object.ExpressionValues["env"].AssertDictionary("env")["env2"].AssertString("github_actions"));
 #else
-                Assert.Equal("100", step1.Object.ExecutionContext.ExpressionValues["env"].AssertCaseSensitiveDictionary("env")["env1"].AssertString("100"));
-                Assert.Equal("github_actions", step1.Object.ExecutionContext.ExpressionValues["env"].AssertCaseSensitiveDictionary("env")["env2"].AssertString("github_actions"));
+                Assert.Equal("100", _ec.Object.ExpressionValues["env"].AssertCaseSensitiveDictionary("env")["env1"].AssertString("100"));
+                Assert.Equal("github_actions", _ec.Object.ExpressionValues["env"].AssertCaseSensitiveDictionary("env")["env2"].AssertString("github_actions"));
 #endif
            }
        }
@@ -455,7 +455,7 @@ namespace GitHub.Runner.Common.Tests.Worker

                _ec.Object.Result = null;

-                _ec.Setup(x => x.JobSteps).Returns(new List<IStep>(new[] { step1.Object, step2.Object }));
+                _ec.Setup(x => x.JobSteps).Returns(new Queue<IStep>(new[] { step1.Object, step2.Object }));

                // Act.
                await _stepsRunner.RunAsync(jobContext: _ec.Object);
@@ -463,13 +463,13 @@ namespace GitHub.Runner.Common.Tests.Worker
                // Assert.
                Assert.Equal(TaskResult.Succeeded, _ec.Object.Result ?? TaskResult.Succeeded);
 #if OS_WINDOWS
-                Assert.Equal("1000", step2.Object.ExecutionContext.ExpressionValues["env"].AssertDictionary("env")["env1"].AssertString("1000"));
-                Assert.Equal("github_actions", step2.Object.ExecutionContext.ExpressionValues["env"].AssertDictionary("env")["env3"].AssertString("github_actions"));
-                Assert.False(step2.Object.ExecutionContext.ExpressionValues["env"].AssertDictionary("env").ContainsKey("env2"));
+                Assert.Equal("1000", _ec.Object.ExpressionValues["env"].AssertDictionary("env")["env1"].AssertString("1000"));
+                Assert.Equal("github_actions", _ec.Object.ExpressionValues["env"].AssertDictionary("env")["env3"].AssertString("github_actions"));
+                Assert.False(_ec.Object.ExpressionValues["env"].AssertDictionary("env").ContainsKey("env2"));
 #else
-                Assert.Equal("1000", step2.Object.ExecutionContext.ExpressionValues["env"].AssertCaseSensitiveDictionary("env")["env1"].AssertString("1000"));
-                Assert.Equal("github_actions", step2.Object.ExecutionContext.ExpressionValues["env"].AssertCaseSensitiveDictionary("env")["env3"].AssertString("github_actions"));
-                Assert.False(step2.Object.ExecutionContext.ExpressionValues["env"].AssertCaseSensitiveDictionary("env").ContainsKey("env2"));
+                Assert.Equal("1000", _ec.Object.ExpressionValues["env"].AssertCaseSensitiveDictionary("env")["env1"].AssertString("1000"));
+                Assert.Equal("github_actions", _ec.Object.ExpressionValues["env"].AssertCaseSensitiveDictionary("env")["env3"].AssertString("github_actions"));
+                Assert.False(_ec.Object.ExpressionValues["env"].AssertCaseSensitiveDictionary("env").ContainsKey("env2"));
 #endif
            }
        }
@@ -493,7 +493,7 @@ namespace GitHub.Runner.Common.Tests.Worker

                _ec.Object.Result = null;

-                _ec.Setup(x => x.JobSteps).Returns(new List<IStep>(new[] { step1.Object, step2.Object }));
+                _ec.Setup(x => x.JobSteps).Returns(new Queue<IStep>(new[] { step1.Object, step2.Object }));

                // Act.
                await _stepsRunner.RunAsync(jobContext: _ec.Object);
@@ -501,11 +501,11 @@ namespace GitHub.Runner.Common.Tests.Worker
                // Assert.
                Assert.Equal(TaskResult.Succeeded, _ec.Object.Result ?? TaskResult.Succeeded);
 #if OS_WINDOWS
-                Assert.Equal("1000", step2.Object.ExecutionContext.ExpressionValues["env"].AssertDictionary("env")["env1"].AssertString("1000"));
-                Assert.Equal("something", step2.Object.ExecutionContext.ExpressionValues["env"].AssertDictionary("env")["env2"].AssertString("something"));
+                Assert.Equal("1000", _ec.Object.ExpressionValues["env"].AssertDictionary("env")["env1"].AssertString("1000"));
+                Assert.Equal("something", _ec.Object.ExpressionValues["env"].AssertDictionary("env")["env2"].AssertString("something"));
 #else
-                Assert.Equal("1000", step2.Object.ExecutionContext.ExpressionValues["env"].AssertCaseSensitiveDictionary("env")["env1"].AssertString("1000"));
-                Assert.Equal("something", step2.Object.ExecutionContext.ExpressionValues["env"].AssertCaseSensitiveDictionary("env")["env2"].AssertString("something"));
+                Assert.Equal("1000", _ec.Object.ExpressionValues["env"].AssertCaseSensitiveDictionary("env")["env1"].AssertString("1000"));
+                Assert.Equal("something", _ec.Object.ExpressionValues["env"].AssertCaseSensitiveDictionary("env")["env2"].AssertString("something"));
 #endif
            }
        }
@@ -524,7 +524,7 @@ namespace GitHub.Runner.Common.Tests.Worker

                _ec.Object.Result = null;

-                _ec.Setup(x => x.JobSteps).Returns(new List<IStep>(new[] { step1.Object, step2.Object, step3.Object }));
+                _ec.Setup(x => x.JobSteps).Returns(new Queue<IStep>(new[] { step1.Object, step2.Object, step3.Object }));

                // Act.
                await _stepsRunner.RunAsync(jobContext: _ec.Object);
@@ -560,7 +560,7 @@ namespace GitHub.Runner.Common.Tests.Worker

                _ec.Object.Result = null;

-                _ec.Setup(x => x.JobSteps).Returns(new List<IStep>(new[] { step1.Object, step2.Object, step3.Object }));
+                _ec.Setup(x => x.JobSteps).Returns(new Queue<IStep>(new[] { step1.Object, step2.Object, step3.Object }));

                // Act.
                await _stepsRunner.RunAsync(jobContext: _ec.Object);
@@ -602,7 +602,7 @@ namespace GitHub.Runner.Common.Tests.Worker
            stepContext.Setup(x => x.WriteDebug).Returns(true);
            stepContext.Setup(x => x.Variables).Returns(_variables);
            stepContext.Setup(x => x.EnvironmentVariables).Returns(_env);
-            stepContext.Setup(x => x.ExpressionValues).Returns(new DictionaryContextData());
+            stepContext.Setup(x => x.ExpressionValues).Returns(_contexts);
            stepContext.Setup(x => x.ExpressionFunctions).Returns(new List<IFunctionInfo>());
            stepContext.Setup(x => x.JobContext).Returns(_jobContext);
            stepContext.Setup(x => x.StepsContext).Returns(_stepContext);
--- a/src/dev.sh
+++ b/src/dev.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/bash

 ###############################################################################
 #  
--- a/src/runnerversion
+++ b/src/runnerversion
@@ -1 +1 @@
-2.267.0
+2.263.0
Author	SHA1	Message	Date
Ethan Chiu	b2c1ea71f9	Add feature flag	2020-06-15 12:03:00 -04:00
Ethan Chiu	a0d93904ee	Fix error + add diagnostics	2020-06-15 11:10:36 -04:00
Ethan Chiu	e654a3e885	Fix templating + assertion on template validation	2020-06-15 10:09:05 -04:00
Ethan Chiu	85796d0011	Resolve build errors	2020-06-15 09:12:54 -04:00
Ethan Chiu	885a128fa5	prep for first test build	2020-06-12 15:34:54 -04:00
Ethan Chiu	46f7da1628	Thoughts on next steps	2020-06-12 15:28:22 -04:00
Ethan Chiu	7abdde0ad9	Step => ActionStep parity	2020-06-11 17:55:13 -04:00
Ethan Chiu	e601a3f4be	Add necessary files + add functionality to convert to ActionStep object	2020-06-11 17:54:24 -04:00
Ethan Chiu	4cb06b9edb	Add comments of alternative mapping solution	2020-06-11 10:46:36 -04:00
Ethan Chiu	65287fb0f0	Add comments + fix action_yaml schema	2020-06-11 10:37:29 -04:00
Ethan Chiu	3fed00814d	rename	2020-06-10 18:01:42 -04:00
Ethan Chiu	e2bb8d9e24	First attempt at creating baseline code for composite actions	2020-06-10 17:50:14 -04:00
@@ -1 +1 @@
 .267.0
 .263.0