release-image.yml

name: Create and publish a Docker image

# Cache setup: https://github.com/docker/build-push-action/blob/master/docs/advanced/cache.md
# Multi push: https://github.com/docker/build-push-action/blob/master/docs/advanced/push-multi-registries.md

on:
  push:
    branches: ['*']

jobs:
  checks-update:
    runs-on: ubuntu-latest
    permissions:
      contents: read
    steps:
      - name: Checkout repository
        uses: actions/checkout@v2

      - name: Check update has been run
        run: |
          ./update.sh
          git diff --quiet

  checks-hadolint:
    runs-on: ubuntu-latest
    permissions:
      contents: read
    container: hadolint/hadolint:latest-debian
    steps:
      - name: Checkout repository
        uses: actions/checkout@v2

      - name: Check hadolint
        run: |
          hadolint --ignore DL3059 */Dockerfile

  checks-shfmt:
    runs-on: ubuntu-latest
    permissions:
      contents: read
    container: mvdan/shfmt:latest-alpine
    steps:
      - name: Checkout repository
        uses: actions/checkout@v2

      - name: Check shfmt
        run: |
          shfmt -i 2 -ci -d update.sh

  checks-shellcheck:
    runs-on: ubuntu-latest
    permissions:
      contents: read
    container: koalaman/shellcheck-alpine:latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v2

      - name: Check shellcheck
        run: |
          shellcheck update.sh

  build-and-push-image:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
    strategy:
      matrix:
        version: [ '7', '7.3', '7.4', '8', '8.0', '8.1', '8.3' ]
        distro: ['', '-alpine']
        debug: ['', '-xdebug']
        exclude:
          - distro: '-alpine'
            debug: '-xdebug'
    needs: [checks-hadolint, checks-shfmt, checks-shellcheck, checks-update]
    steps:
      - name: Checkout repository
        uses: actions/checkout@v2

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v1

      - name: Login to Docker Hub
        if: github.ref == 'refs/heads/master'
        uses: docker/login-action@v1
        with:
          username: ${{ secrets.DOCKER_HUB_USERNAME }}
          password: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}

      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@v3
        with:
          images: ekreative/php
          tags: |
            type=raw,value=${{ matrix.version }}${{ matrix.distro }}${{ matrix.debug }}
          flavor: |
            latest=${{ toJSON(matrix.version == '8' && matrix.distro == '' && matrix.debug == '' && github.ref == 'refs/heads/master') }}

      - name: Build and push Docker image
        uses: docker/build-push-action@v2
        with:
          context: ${{ matrix.version }}${{ matrix.distro }}${{ matrix.debug }}
          push: ${{ github.ref == 'refs/heads/master' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max