name: ci

on:
  pull_request:

jobs:
  ci:
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        dockerfile:
          - Dockerfile
          - Dockerfile.web
        include:
          - dockerfile: Dockerfile
            docker-image: localhost:5000/${{ github.event.repository.full_name }}
          - dockerfile: Dockerfile.web
            docker-image: localhost:5000/${{ github.event.repository.full_name }}web

    services:
      registry:
        image: registry:latest
        ports:
          - 5000:5000

    steps:
      - name: Checkout
        uses: actions/checkout@v2.3.3

      - name: Prepare
        id: prep
        run: |
          echo ::set-output name=build-date::$(date -u +'%Y-%m-%dT%H:%M:%SZ')

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v1.0.1

      - name: Set up Docker Buildx
        id: buildx
        uses: docker/setup-buildx-action@v1.0.2
        with:
          version: latest
          driver-opts: network=host

      - name: Available platforms
        run: echo ${{ steps.buildx.outputs.platforms }}

      - name: Get platforms
        uses: actions/github-script@v3.0.0
        id: platforms
        env:
          DOCKER_CLI_EXPERIMENTAL: enabled
        with:
          result-encoding: string
          script: |
            const script = require(`${process.env.GITHUB_WORKSPACE}/.github/getDockerPlatforms.js`)
            return script("${{ matrix.dockerfile }}", "${{ steps.buildx.outputs.platforms }}");

      - name: Platforms
        run: echo ${{ steps.platforms.outputs.result }}

      - name: Cache Docker layers
        uses: actions/cache@v2.1.1
        id: cache
        with:
          path: /tmp/.buildx-cache
          key: ${{ runner.os }}-docker-${{ matrix.dockerfile }}-${{ hashFiles('**/package-lock.json') }}-${{ github.sha }}
          restore-keys: |
            ${{ runner.os }}-docker-${{ matrix.dockerfile }}-${{ hashFiles('**/package-lock.json') }}
            ${{ runner.os }}-docker-${{ matrix.dockerfile }}-
            ${{ runner.os }}-docker-

      - name: Cache hit
        run: echo ${{ steps.cache.outputs.cache-hit }}

      - name: Build and push
        id: docker-build
        uses: docker/build-push-action@v2
        with:
          push: true
          builder: ${{ steps.buildx.outputs.name }}
          context: .
          file: ./${{ matrix.dockerfile}}
          platforms: ${{ steps.platforms.outputs.result }}
          tags: ${{ matrix.docker-image }}:${{ github.sha }}
          cache-from: type=local,src=/tmp/.buildx-cache
          cache-to: type=local,dest=/tmp/.buildx-cache,mode=max
          build-args: |
            BUILD_DATE=${{ steps.prep.outputs.build-date }}
            REVISION=${{ github.sha }}

      - name: Inspect
        run: |
          docker buildx imagetools inspect ${{ matrix.docker-image }}:${{ github.sha }}

      - name: Image digest
        run: echo ${{ steps.docker-build.outputs.digest }}

      - name: Dump context
        if: always()
        uses: crazy-max/ghaction-dump-context@v1.0.0