name: Docker

on:
  push:
    branches:
      - master

jobs:
  push:
    name: Push
    runs-on: ubuntu-20.04

    strategy:
      fail-fast: false

      matrix:
        image:
          - "alpine"
          #- "alpine-install"
          #- "java7"
          #- "java8"
          #- "java9"
          #- "java10"
          #- "java11"
          #- "java12"
          #- "java13"
          #- "java14"
          #- "java15"
          #- "source"
          #- "source-install"

    steps:
      - name: Code Checkout
        uses: actions/checkout@v2

      - name: Install buildx
        uses: docker/setup-buildx-action@v1
        with:
          version: v0.5.1
          buildkitd-flags: --debug

      - name: Registry Authentication
        run: |
          echo "${{ secrets.GITHUB_TOKEN }}" | docker login docker.pkg.github.com -u ${{ github.actor }} --password-stdin

      - name: Build Image
        env:
          IMAGE_ID: docker.pkg.github.com/${{ github.repository }}/${{ matrix.image }}:latest
        run: |
          docker buildx build --push --platform=linux/amd64 --tag=$IMAGE_ID ./${{ matrix.image }}