on_pr.yml

---
name: Pull Request

on:
  # Enable manual running of action if necessary
  workflow_dispatch:
  # Test build/deploy on PRs to main/master
  pull_request:
    # Only publish on push to main branch
    branches:
      - main
    # Don't trigger if it's just a documentation update
    paths-ignore:
      - "**.md"
      - "**.MD"
      - "**.yml"
      - "LICENSE"
      - ".gitattributes"
      - ".gitignore"
      - ".dockerignore"

jobs:
  shellcheck:
    name: Run shellcheck against shell scripts
    runs-on: ubuntu-latest
    if: ${{ github.event_name == 'pull_request' }}
    steps:
      - uses: actions/checkout@v4.1.7
      - name: Pull koalaman/shellcheck:stable Image
        run: docker pull koalaman/shellcheck:stable
      - name: Run Shellcheck against shell scripts
        run: docker run --rm -i -v "$PWD:/mnt" koalaman/shellcheck:stable $(find . -type f -exec grep -m1 -l -E '^#!.*sh.*' {} \; | grep -v '/.git/')

  hadolint:
    name: Run hadolint against docker files
    runs-on: ubuntu-latest
    if: ${{ github.event_name == 'pull_request' }}
    steps:
      - uses: actions/checkout@v4.1.7
      - name: Pull hadolint/hadolint:latest Image
        run: docker pull hadolint/hadolint:latest
      - name: Run hadolint against Dockerfiles
        run: docker run --rm -i -v "$PWD":/workdir --workdir /workdir --entrypoint hadolint hadolint/hadolint --ignore DL3003 --ignore DL3006 --ignore DL3010 --ignore DL4001 --ignore DL3007 --ignore DL3008 --ignore SC2068 --ignore DL3007 --ignore SC1091 --ignore DL3013 --ignore DL3010 $(find . -type f -iname "Dockerfile*")

  test_build:
    name: Test Build
    runs-on: ubuntu-latest
    needs: [shellcheck, hadolint]
    strategy:
      matrix:
        docker-platform:
          - linux/amd64
          - linux/arm64
          - linux/arm/v7
          - linux/i386

    steps:
      # Check out our code
      - name: Checkout
        uses: actions/checkout@v4.1.7
        with:
          fetch-depth: 0

      # List of files to check to trigger a rebuild on this job
      - name: Get specific changed files
        id: changed-files-specific
        uses: tj-actions/changed-files@v44.5.2
        with:
          files: |
            Dockerfile
            rootfs
            !*.md
            !*.MD

      # Set up QEMU for multi-arch builds
      - name: Set up QEMU
        if: steps.changed-files-specific.outputs.any_changed == 'true'
        uses: docker/setup-qemu-action@v3.0.0

      # Set up buildx for multi platform builds
      - name: Set up Docker Buildx
        if: steps.changed-files-specific.outputs.any_changed == 'true'
        id: buildx
        uses: docker/setup-buildx-action@v3.3.0

      # Build
      - name: Test Build
        if: steps.changed-files-specific.outputs.any_changed == 'true'
        uses: docker/build-push-action@v5.4.0
        with:
          context: .
          file: ./Dockerfile
          no-cache: true
          platforms: ${{ matrix.docker-platform }}
          push: false