name: Build Docker Image

on:
  release:
    types:
      - released    # publishing of stable releases
  push:
    branches:
      - master
  pull_request:
    branches:
      - master
    paths:
      - '.github/workflows/docker-release.yml'
      - 'Dockerfile'

# Cancel earlier, unfinished runs of this workflow on the same branch (unless on release)
concurrency:
  group: "${{ github.workflow }} @ ${{ github.ref_name }}"
  cancel-in-progress: ${{ github.event_name != 'release' }}

jobs:
  docker:
    name: amd64 & arm64
    if: ${{ github.repository_owner == 'Cockatrice' }}
    runs-on: ubuntu-latest

    permissions:
      contents: read
      packages: write
  
    steps:
      - name: Checkout
        uses: actions/checkout@v6

      - name: Docker metadata
        id: metadata
        uses: docker/metadata-action@v6
        env:
          DOCKER_METADATA_ANNOTATIONS_LEVELS: index    # needed for GHCR
        with:
          images: |
            ghcr.io/cockatrice/servatrice
          labels: |
            org.opencontainers.image.title=Servatrice
            org.opencontainers.image.url=https://cockatrice.github.io/
            org.opencontainers.image.description=Server for Cockatrice, a cross-platform virtual tabletop for multiplayer card games
          annotations: |
            org.opencontainers.image.title=Servatrice
            org.opencontainers.image.url=https://cockatrice.github.io/
            org.opencontainers.image.description=Server for Cockatrice, a cross-platform virtual tabletop for multiplayer card games  

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v4

      - name: Set up Docker buildx
        uses: docker/setup-buildx-action@v4

      - name: Login to GitHub Container Registry
        if: contains(github.event.release.tag_name, 'Release') && github.event.release.target_commitish == 'master'
        uses: docker/login-action@v4
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ github.token }}

      - name: Build and push Docker image
        uses: docker/build-push-action@v7
        with:
          context: .
          platforms: linux/amd64,linux/arm64
          push: ${{ github.ref_type == 'tag' }}
          tags: ${{ steps.metadata.outputs.tags }}
          labels: ${{ steps.metadata.outputs.labels }}
          annotations: ${{ steps.metadata.outputs.annotations }}
          cache-from: type=gha,scope=servatrice
          cache-to: type=gha,mode=max,scope=servatrice