default.yaml

name: Docker Build and Push

on:
  schedule:
    - cron: '0 10 * * 0' # Every Sunday at 10AM
  push:
    branches:
      - master
      - develop
      - feature/*
    tags:
      - 'v*.*.*'
  workflow_dispatch: # Allow manually triggering a build

defaults:
  run:
    shell: bash

env:
  IMAGE: docksal/cli
  UPSTREAM_IMAGE: debian
  LATEST_VERSION: '8.2'
  DOCKSAL_VERSION: develop

jobs:
  build:
    name: "Build: ${{ matrix.version }}/${{ matrix.arch }}"
    runs-on: ubuntu-22.04

    strategy:
      fail-fast: false # Don't cancel other jobs if one fails
      matrix:
        include:
          -
            platform: linux/amd64
            arch: amd64
            version: '8.1'
          -
            platform: linux/amd64
            arch: amd64
            version: '8.2'
          -
            platform: linux/arm64
            arch: arm64
            version: '8.1'
          -
            platform: linux/arm64
            arch: arm64
            version: '8.2'

    env:
      ARCH: ${{ matrix.arch }}
      VERSION_PREFIX: php
      VERSION: ${{ matrix.version }}

    steps:
      -
        name: Checkout
        uses: actions/checkout@v3
      -
        name: Environment variables
        run: |
          # Export variables for further steps
          echo GIT_SHA7="${GITHUB_SHA:0:7}" | tee -a ${GITHUB_ENV}
          echo BUILD_DIR="${VERSION:-.}" | tee -a ${GITHUB_ENV}
          echo BUILD_IMAGE_TAG="${IMAGE}:${VERSION_PREFIX}${VERSION}-build" | tee -a ${GITHUB_ENV}
          # Pull the host public SSH key at runtime instead of relying on a static value stored in secrets.
          echo ARM64_HOST_SSH_CERT="$(ssh-keyscan -t rsa ${{ secrets.ARM64_HOST }} 2>/dev/null)" | tee -a ${GITHUB_ENV}
      -
        # Switch docker context to a remote arm64 host
        name: Switch to arm64 builder host
        if: ${{ env.ARCH == 'arm64' }}
        uses: arwynfr/actions-docker-context@v2
        with:
          docker_host: "ssh://build-agent@${{ secrets.ARM64_HOST }}"
          context_name: arm64-host
          ssh_key: "${{ secrets.ARM64_HOST_SSH_KEY }}"
          ssh_cert: "${{ env.ARM64_HOST_SSH_CERT }}"
          use_context: true
      -
        name: Check Docker
        run: |
          docker version
          docker info
      -
        name: Login to Docker Hub
        uses: docker/login-action@v2
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}
      -
        # Build and cache image in the registry
        name: Build image
        uses: docker/build-push-action@v3
        with:
          context: ${{ env.BUILD_DIR }}
          file: ${{ env.BUILD_DIR }}/Dockerfile
          build-args: VERSION=${{ env.VERSION }}
          # Push intermediate arch-specific build tag to repo
          tags: ${{ env.BUILD_IMAGE_TAG }}-${{ env.GIT_SHA7 }}-${{ env.ARCH }}
          push: ${{ github.event_name != 'pull_request' }} # Don't push for PRs
          # BUILD_IMAGE_TAG - persistent multi-arch tag, updated at the end of the build (success or failure)
          cache-from: type=registry,ref=${{ env.BUILD_IMAGE_TAG }}
          cache-to: type=inline # Write the cache metadata into the image configuration

  test:
    name: "Test: ${{ matrix.version }}/${{ matrix.arch }}"
    runs-on: ubuntu-22.04
    needs: build

    strategy:
      fail-fast: false # Don't cancel other jobs if one fails
      matrix:
        include:
          -
            platform: linux/amd64
            arch: amd64
            version: '8.1'
          -
            platform: linux/amd64
            arch: amd64
            version: '8.2'
          -
            platform: linux/arm64
            arch: arm64
            version: '8.1'
          -
            platform: linux/arm64
            arch: arm64
            version: '8.2'

    env:
      ARCH: ${{ matrix.arch }}
      VERSION_PREFIX: php
      VERSION: ${{ matrix.version }}

    steps:
      -
        name: Setup Bats
        uses: mig4/setup-bats@v1
        with:
          bats-version: '1.3.0'
      -
        name: Checkout
        uses: actions/checkout@v3
      -
        name: Environment variables
        run: |
          # Export variables for further steps
          echo GIT_SHA7="${GITHUB_SHA:0:7}" | tee -a ${GITHUB_ENV}
          echo BUILD_DIR="${VERSION:-.}" | tee -a ${GITHUB_ENV}
          echo BUILD_IMAGE_TAG="${IMAGE}:${VERSION_PREFIX}${VERSION}-build" | tee -a ${GITHUB_ENV}
          # Pull the host public SSH key at runtime instead of relying on a static value stored in secrets.
          echo ARM64_HOST_SSH_CERT="$(ssh-keyscan -t rsa ${{ secrets.ARM64_HOST }} 2>/dev/null)" | tee -a ${GITHUB_ENV}
      -
        # Switch docker context to a remote arm64 host
        name: Switch to arm64 builder host
        if: ${{ env.ARCH == 'arm64' }}
        uses: arwynfr/actions-docker-context@v2
        with:
          docker_host: "ssh://build-agent@${{ secrets.ARM64_HOST }}"
          context_name: arm64-host
          ssh_key: "${{ secrets.ARM64_HOST_SSH_KEY }}"
          ssh_cert: "${{ env.ARM64_HOST_SSH_CERT }}"
          use_context: true
      -
        name: Check Docker
        run: |
          docker version
          docker info
      -
        # Run tests
        name: Test
        id: tests
        working-directory: ${{ env.BUILD_DIR }}
        env:
          BUILD_IMAGE_TAG: ${{ env.BUILD_IMAGE_TAG }}-${{ env.GIT_SHA7 }}-${{ env.ARCH }}
          SECRET_PLATFORMSH_CLI_TOKEN: ${{ secrets.SECRET_PLATFORMSH_CLI_TOKEN }}
          SECRET_TERMINUS_TOKEN: ${{ secrets.SECRET_TERMINUS_TOKEN }}
        run: |
          make test
          ([[ $? == 0 ]] && echo "pass" || echo "fail") | tee ${{ github.workspace }}/test-results-${VERSION_PREFIX}${VERSION}-${ARCH}.txt
      # Store tests results as an artifact (used by downstream jobs)
      # Note: Cannot use "::set-output name=var_name::var_value" as var_name would need to be dynamic here.
      # Dynamic variable names cannot be used when mapping step outputs to job outputs.
      # Step outputs cannot be accessed directly from other jobs. Dead end.
      - name: Store test results
        uses: actions/upload-artifact@v3
        with:
          name: test-results
          path: ${{ github.workspace }}/test-results-*.txt

  push:
    name: "Push: ${{ matrix.version }}/multi"
    runs-on: ubuntu-22.04

    # Wait for test to either succeed or fail
    needs: test
    if: always()

    strategy:
      matrix:
        version:
          - '8.1'
          - '8.2'

    env:
      VERSION_PREFIX: php
      VERSION: ${{ matrix.version }}

    steps:
      -
        name: Checkout
        uses: actions/checkout@v3
      -
        name: Environment variables
        run: |
          # Export variables for further steps
          echo GIT_SHA7="${GITHUB_SHA:0:7}" | tee -a ${GITHUB_ENV}
          echo BUILD_DIR="${VERSION:-.}" | tee -a ${GITHUB_ENV}
          echo BUILD_IMAGE_TAG="${IMAGE}:${VERSION_PREFIX}${VERSION}-build" | tee -a ${GITHUB_ENV}
      -
        # Login to Docker Hub
        name: Login to Docker Hub
        uses: docker/login-action@v2
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}
      -
        name: Retrieve test results
        uses: actions/download-artifact@v2
        with:
          name: test-results
      -
        # Generate persistent tags (edge, stable, release)
        name: Docker image tags
        id: docker_tags
        # Don't push broken builds to persistent tags (both amd64 and arm64 tests must pass)
        run: |
          amd64_tests=$(cat test-results-${VERSION_PREFIX}${VERSION}-amd64.txt)
          arm64_tests=$(cat test-results-${VERSION_PREFIX}${VERSION}-arm64.txt)
          if [[ "${amd64_tests}" == "pass" ]] && [[ "${arm64_tests}" == "pass" ]]; then
            .github/scripts/docker-tags.sh
          fi
      -
        # Create and push multi-arch image manifests
        name: Push multi-arch images
        env:
          # build tags are always pushed (build caching, debugging needs)
          # edge, stage, release are only pushed if tests were successful (see docker_tags step)
          TAGS: |
            ${{ env.BUILD_IMAGE_TAG }}
            ${{ steps.docker_tags.outputs.tags }}
          DOCKERHUB_USERNAME: ${{ secrets.DOCKERHUB_USERNAME }} # Needed for docker-tag-delete.sh
          DOCKERHUB_PASSWORD: ${{ secrets.DOCKERHUB_PASSWORD }} # Needed for docker-tag-delete.sh
        run: |
          set -xeuo pipefail
          IFS="${IFS}," # Also split strings by comma (in case list of tag is comma-separated)
          for tag in ${TAGS}; do
            if [[ "${tag}" == "" ]]; then continue; fi
            docker manifest create --amend ${tag} \
              ${{ env.BUILD_IMAGE_TAG }}-${{ env.GIT_SHA7 }}-amd64 \
              ${{ env.BUILD_IMAGE_TAG }}-${{ env.GIT_SHA7 }}-arm64
            docker manifest inspect ${tag}
            docker manifest push ${tag}
          done
          # Clean up intermediate arch-specific image tags (DockerHub only)
          .github/scripts/docker-tag-delete.sh "${{ env.BUILD_IMAGE_TAG }}-${{ env.GIT_SHA7 }}-amd64"
          .github/scripts/docker-tag-delete.sh "${{ env.BUILD_IMAGE_TAG }}-${{ env.GIT_SHA7 }}-arm64"