name: Publish Docker image
on: [push]
jobs:
  push_to_registry:
    name: Push Docker image to Docker Hub
    runs-on: ubuntu-latest
    steps:
      - name: Check out the repo
        uses: actions/checkout@v2
      - uses: actions/setup-java@v1
        with:
          java-version: 11
      - name: Build
        run: ./gradlew build
      - name: Docker meta
        id: docker_meta
        uses: crazy-max/ghaction-docker-meta@v1
        with:
          images: name/app
          tag-sha: true
          tag-latest: false
      - name: Push to Docker Hub
        uses: docker/build-push-action@v1
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}
          context: .
          tags: ${{ steps.docker_meta.outputs.tags }}