publish-containers.yml

name: Publish to GitHub container registry

on:
  push:
    branches: [ "master" ]
    
jobs:
  publish-containers:
    runs-on: ubuntu-latest

    env:
      REGISTRY: ghcr.io
    
    strategy:
      fail-fast: false
      matrix:
        platform:
          - linux/amd64
        project:
          - dockerfile: ./src/ImageHosting.Storage.WebApi/Dockerfile
            image: ghcr.io/baklanov-soft/image-hosting-storage-webapi
          - dockerfile: ./src/ImageHosting.Storage.Tagger/Dockerfile
            image: ghcr.io/baklanov-soft/image-hosting-storage-tagger

    permissions:
      contents: read
      packages: write

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      # Set up BuildKit Docker container builder to be able to build
      # multi-platform images and export cache
      # https://github.com/docker/setup-buildx-action
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
        with:
          platforms: ${{ matrix.platform }}

      # Login against a Docker registry except on PR
      # https://github.com/docker/login-action
      - name: Log into registry ${{ env.REGISTRY }}
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      # Extract metadata (tags, labels) for Docker
      # https://github.com/docker/metadata-action
      - name: Extract Docker metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ matrix.project.image }}

      # Build and push Docker image with Buildx (don't push on PR)
      # https://github.com/docker/build-push-action
      - name: Build and push Docker image
        id: build-and-push
        uses: docker/build-push-action@v6
        with:
          context: .
          file: ${{ matrix.project.dockerfile }}
          platforms: ${{ matrix.platform }}
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max