name: .NET Docker Build & Push

on:
  push:
    branches:
      - 'main'
  release:
    types: [published]

jobs:
  build_and_push:
    runs-on: ubuntu-latest
    
    # --- WICHTIG: Das hier hat gefehlt ---
    permissions:
      packages: write
      contents: read
    # -------------------------------------

    steps:
      - name: Check out the repo
        uses: actions/checkout@v4

      # Login in deine Gitea Registry
      - name: Log in to the Container registry
        uses: docker/login-action@v3
        with:
          registry: gitea.penry.de
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      # Metadaten (Tags generieren: latest, v1.0, etc.)
      - name: Extract metadata for Docker
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: gitea.penry.de/${{ github.repository }}

      # Der eigentliche Build. 
      - name: Build and push Docker image
        uses: docker/build-push-action@v5
        with:
          context: .
          file: ./Dockerfile
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          # Da dein Runner auf dem Pi läuft, baut er automatisch ARM64.
          # Wir erzwingen es hier aber, damit im Metadaten-Tag alles stimmt.
          platforms: linux/arm64