dockerbuild.yml

name: Docker Build

on:
  schedule:
    - cron:  '0 0 * * *'
  push:
    branches:
      - master
  pull_request:

jobs:
  matrix:
    runs-on: ubuntu-latest
    outputs:
      matrix: ${{ steps.set-matrix.outputs.matrix }}
    steps:
    - id: set-matrix
      run: |
        wget -q https://github.com/ericchiang/pup/releases/download/v0.4.0/pup_v0.4.0_linux_amd64.zip
        unzip pup_v0.4.0_linux_amd64.zip

        wget -q http://old.openzwave.com/downloads/ -O downloads.html

        EXISTING_TAGS=$(wget -q https://registry.hub.docker.com/v1/repositories/chrisns/openzwave/tags -O -)

        MATRIX="{\"openzwave\":[\"git\""

        for i in {2..4}
        do
          VERSION=$(cat downloads.html | ./pup '#pagecontent > table:nth-child(2) > tbody > tr:nth-child('${i}') > td:nth-child(1) text{}')
          if [[ $EXISTING_TAGS != *"$VERSION"* ]]
          then
            echo ADDING $VERSION TO MATRIX
            MATRIX="${MATRIX},\"${VERSION}\""
          else
            echo SKIPPING ${VERSION}
          fi
        done

        MATRIX="${MATRIX}],\"dockerfile\":[\"alpine\",\"debian\",\"ubuntu\",\"centos8\"]}"
        echo $MATRIX
        echo "::set-output name=matrix::$MATRIX"

  build:
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix: ${{fromJson(needs.matrix.outputs.matrix)}}
    needs: 
      - matrix
    steps:
      - name: Set tag
        run: echo "BUILD_TAG=${{ matrix.dockerfile }}-${{ matrix.openzwave }}" >> $GITHUB_ENV

      - uses: actions/checkout@v2.4.0
        with:
          submodules: ${{ matrix.openzwave == 'git' }}

      - name: Get and extract stable ozw
        if: ${{ steps.should.outputs.build == 'true' && matrix.openzwave != 'git'}}
        run: |
          curl -o ozw.tar.gz http://old.openzwave.com/downloads/openzwave-${{ matrix.openzwave }}.tar.gz
          tar -xzvf ozw.tar.gz
          rm -rf open-zwave
          mv openzwave-${{ matrix.openzwave }} open-zwave
          mkdir -p .git/modules/open-zwave/refs/heads
          echo ${{ matrix.openzwave }} > .git/modules/open-zwave/refs/heads/master

      - name: Setup some environment variables
        run: |        
          echo BUILDPLATFORM=$([ "$GITHUB_REF" == "refs/heads/master" ] && echo $(cat SupportedArch.${{ matrix.dockerfile }}) || echo "linux/amd64") >> $GITHUB_ENV
          echo OZW_VERSION=$(cat .git/modules/open-zwave/refs/heads/master) >> $GITHUB_ENV

      - name: Login to dockerhub
        if: ${{ github.event_name != 'pull_request' }}
        uses: docker/login-action@v1.12.0
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}

      - uses: docker/setup-buildx-action@v1

      - uses: docker/setup-qemu-action@v1.2.0

      - name: build+push
        uses: docker/build-push-action@v2.8.0
        with:
          file: Dockerfile.${{ matrix.dockerfile }}
          cache-from: type=registry,ref=chrisns/openzwave:${{ matrix.dockerfile }}-sha-${{ env.OZW_VERSION }}
          platforms: ${{ env.BUILDPLATFORM }}
          push: ${{ github.ref == 'refs/heads/master' }}
          tags: |
            chrisns/openzwave:${{ matrix.dockerfile }}-${{ matrix.openzwave }}
            chrisns/openzwave:${{ matrix.dockerfile }}-sha-${{ env.OZW_VERSION }}