name: docker-images

on:
  push:
    branches: 
    - master
    - docker-test
  pull_request:
    branches: 
    - master
    - docker-test

jobs:
  multi:
    strategy:
      fail-fast: false
      matrix:
        image: 
          - bandersnatch
          - ftpsync
          - homebrew-mirror
          - nix-channels
          - pub-mirror
          - rustup-mirror
        include:
          - image: tunasync-scripts
            dockerfile: .
          - image: julia-mirror
            dockerfile: dockerfiles/julia
          - image: rubygems-mirror
            dockerfile: dockerfiles/rubygems
            
    runs-on: ubuntu-latest
    steps:
      - 
        name: Determin docker tag
        env:
          TAG_NAME: ${{ github.ref }}
        run: |
          if [ "${TAG_NAME##*/}" = "master" ]; then
            tag=latest
          else
            tag=build-test
          fi
          echo "::set-env name=docker_tag::${tag}"
      - 
        name: Determin dockerfile
        env:
          DF: ${{ matrix.dockerfile }}
          IMG: ${{ matrix.image }}
        run: |
          if [ -z "${DF}" ]; then
            DF="dockerfiles/${IMG}"
          fi
          echo "::set-env name=docker_file::${DF}"
      -
        name: Checkout
        uses: actions/checkout@v2
      -
        name: Set up QEMU
        uses: docker/setup-qemu-action@v1
        with:
          platforms: arm64
      -
        name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v1
      -
        name: Cache Docker layers
        uses: actions/cache@v2
        with:
          path: /tmp/.buildx-cache
          key: ${{ runner.os }}-buildx-${{ matrix.image }}-${{ github.sha }}
          restore-keys: |
            ${{ runner.os }}-buildx-${{ matrix.image }}-
            ${{ runner.os }}-buildx-
      -
        name: Login to DockerHub
        uses: docker/login-action@v1 
        if: github.event_name == 'push'
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}
      -
        name: Build and push
        uses: docker/build-push-action@v2
        with:
          context: .
          file: ${{ env.docker_file }}/Dockerfile
          platforms: linux/amd64,linux/arm64
          push: ${{ github.event_name == 'push' }}
          tags: tunathu/${{ matrix.image }}:${{ env.docker_tag }}
          cache-from: type=local,src=/tmp/.buildx-cache
          cache-to: type=local,dest=/tmp/.buildx-cache