---
name: Build and Publish Docker Image
on:
  push:
    branches:
      - master
    tags:
      - '*'

jobs:
  build-and-push:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Log in to Zot Container Registry
        uses: docker/login-action@v3
        with:
          registry: registry.br0tkasten.de
          username: runner
          # Zot credentials for runner, stored in the Gitea Actions secret TOKEN.
          password: ${{ secrets.TOKEN }}

      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: registry.br0tkasten.de/${{ gitea.repository }}
          flavor: |
            latest=true
          tags: |
            type=ref,event=branch
            type=semver,pattern={{version}}
            type=sha

      - name: Build and push Docker image
        uses: docker/build-push-action@v5
        with:
          context: .
          outputs: type=registry,oci-mediatypes=true
          # Keep a single image manifest with the annotations required by Zot's linter.
          provenance: false
          annotations: |
            manifest:org.opencontainers.image.vendor=br0tkasten.de
            manifest:org.opencontainers.image.licenses=MIT
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}