actions-runner-controller/.github/workflows/ubuntu-18-04-runners.yml

name: Ubuntu 18.04 Runners

on:
  pull_request:
    types: 
      - opened
      - synchronize
      - reopened
      - closed
    branches:
      - 'master'
    paths:
      - 'runner/**'
      - .github/workflows/ubuntu-18-04-runners.yml
      - '!**.md'
      - '!runner/Dockerfile'
      - '!runner/Dockerfile.dindrunner'

env:
  RUNNER_VERSION: 2.284.0
  DOCKER_VERSION: 20.10.8
  DOCKERHUB_USERNAME: summerwind

jobs:
  build:
    runs-on: ubuntu-latest
    name: Build ${{ matrix.name }}-ubuntu-${{ matrix.os-version }}
    strategy:
      fail-fast: false
      matrix:
        include:
          - name: actions-runner
            os-version: 18.04
            dockerfile: Dockerfile.ubuntu.1804

    steps:
      - name: Checkout
        uses: actions/checkout@v2

      - name: Setup Docker Environment
        id: vars
        uses: ./.github/actions/setup-docker-environment
        with: 
          username: ${{ secrets.DOCKER_USER }}
          password: ${{ secrets.DOCKER_ACCESS_TOKEN }}

      - name: Build and Push Versioned Tags
        uses: docker/build-push-action@v2
        with:
          context: ./runner
          file: ./runner/${{ matrix.dockerfile }}
          platforms: linux/amd64,linux/arm64
          push: ${{ github.ref == 'master' && github.event.pull_request.merged == true }}
          build-args: |
            RUNNER_VERSION=${{ env.RUNNER_VERSION }}
            DOCKER_VERSION=${{ env.DOCKER_VERSION }}
          tags: |
            ${{ env.DOCKERHUB_USERNAME }}/${{ matrix.name }}:v${{ env.RUNNER_VERSION }}-ubuntu-${{ matrix.os-version }}
            ${{ env.DOCKERHUB_USERNAME }}/${{ matrix.name }}:v${{ env.RUNNER_VERSION }}-ubuntu-${{ matrix.os-version }}-${{ steps.vars.outputs.sha_short }}
          cache-from: type=gha
          cache-to: type=gha,mode=max