build-container.yml

# Based on the example from https://docs.github.com/en/actions/publishing-packages/publishing-docker-images
name: Create and publish a Docker image

on:
  push:
    branches:
      - 'master'
      - 'v202[0-9].[0-9].x'
    tags:
      - 'v*'
  pull_request:

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: gluon-build

jobs:
  build-and-push-image:
    runs-on: ubuntu-latest
    permissions: write-all
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
      - name: Log in to the Container registry
        uses: docker/login-action@1f401f745bf57e30b3a2800ad308a87d2ebdf14b
        if: ${{ github.repository_owner == 'freifunk-gluon' && github.event_name == 'push' }}
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@62339db73c56dd749060f65a6ebb93a6e056b755
        with:
          images: ${{ env.REGISTRY }}/freifunk-gluon/${{ env.IMAGE_NAME }}
      - name: Build and push Docker image
        uses: docker/build-push-action@fdf7f43ecf7c1a5c7afe936410233728a8c2d9c2
        with:
          context: ./contrib/docker
          push: ${{ github.repository_owner == 'freifunk-gluon' && github.event_name == 'push' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}