docker.yml

name: Publish Docker
# Only run when Docker-related files are changed
on:
  push:
    branches:
      - main
    paths:
      - .docker/Dockerfile
      - .docker/entrypoint.sh
      - .docker/build.sh
      - .github/workflows/docker.yml

# Adapted from:
# - https://github.com/docker/metadata-action#semver
# - https://docs.github.com/en/actions/publishing-packages/publishing-docker-images#publishing-images-to-github-packages

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

jobs:
  publish:
    runs-on: ubuntu-latest
    steps:
      -
        name: Checkout
        uses: actions/checkout@v4
      -
        name: Docker Meta
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=raw,value=latest,enable=${{ github.ref == format('refs/heads/{0}', 'main') }}
      -
        name: Login to GitHub Container Registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      -
        name: Build and Push
        uses: docker/build-push-action@v6
        with:
          context: .
          file: .docker/Dockerfile
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}