docker-build.yml

# This workflow is run as part of CI to test that they run through.
#
# The images are pushed to `ghcr.io` for each PR and branch.  The ones for
# the releases are pushed in `release-please.yml`.
name: Docker Build

on:
  push:
    tags:
      - 'v**'
    branches:
      - main
      - berlin
  pull_request:
    branches:
      - main
      - berlin

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  build-and-push-image:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          submodules: 'recursive'
          lfs: true

      - name: Log in to the Container registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Write VERSION file for Python package
        run: |
          git describe --tags | tee VERSION

      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=schedule
            type=ref,event=branch
            type=ref,event=tag
            type=ref,event=pr
            type=sha

      - name: Build and push Docker image
        uses: docker/build-push-action@v6
        with:
          context: .
          file: utils/docker/Dockerfile
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}