docker.yml

name: Docker Build

on:
  push:
    branches: [ master ]
    tags: [ 'v*' ]
  pull_request:

jobs:
  build:
    runs-on: ubuntu-latest

    strategy:
      matrix:
        jvm-impl: [ hotspot, openj9 ]

    steps:
      - uses: actions/checkout@v2

      - name: Docker meta
        id: docker_meta
        uses: hugopeixoto/ghaction-docker-meta@feature/add-flavor
        with:
          tag-edge: true
          images: crypticcp/cryptic-game-server
          tag-semver: |
            {{version}}
            {{major}}.{{minor}}
          flavor: ${{ matrix.jvm-impl }}
          main-flavor: ${{ matrix.jvm-impl == 'hotspot' }}

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

      - name: Cache Docker layers
        uses: actions/cache@v2
        with:
          path: /tmp/.buildx-cache
          key: ${{ runner.os }}-buildx-${{ github.sha }}
          restore-keys: |
            ${{ runner.os }}-buildx-

      - name: Login to Docker Hub
        uses: docker/login-action@v1
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_PASSWORD }}

      - name: Build
        uses: docker/build-push-action@v2
        with:
          platforms: amd64
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.docker_meta.outputs.tags }}
          labels: ${{ steps.docker_meta.outputs.labels }}
          build-args: |
            JVM_IMPL=${{ matrix.jvm-impl }}
          cache-from: type=local,src=/tmp/.buildx-cache
          cache-to: type=local,dest=/tmp/.buildx-cache-new

      - name: Move cache
        run: |
          rm -rf /tmp/.buildx-cache
          mv /tmp/.buildx-cache-new /tmp/.buildx-cache