name: Create and publish a Docker image

# Configures this workflow to run every time a change is pushed to the main branch with a semver tag.
on:
  push:
    tags:
      - '*.*.*'
  workflow_dispatch:

# Defines two custom environment variables for the workflow. These are used for the Container registry domain,
# and a name for the Docker image that this workflow builds.
env:
  REGISTRY: git.housh.dev
  IMAGE_NAME: ${{ gitea.repository }}

# There is a single job in this workflow. It's configured to run on the latest available version of Ubuntu.
jobs:
  build-and-push-image:
    runs-on: ubuntu-latest
    # Sets the permissions granted to the `GITHUB_TOKEN` for the actions in this job.
    permissions:
      contents: read
      packages: write
      attestations: write
      id-token: write
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
      # Uses the `docker/login-action` action to log in to the Container registry registry using the account
      # and password that will publish the packages. Once published, the packages are scoped to the account defined here.
      - name: Log in to the Container registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ gitea.actor }}
          password: ${{ secrets.CONTAINER_TOKEN }}
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
      # This step uses [docker/metadata-action](https://github.com/docker/metadata-action#about) to extract tags and labels
      # that will be applied to the specified image. The `id` "meta" allows the output of this step to be referenced in a
      # subsequent step. The `images` value provides the base name for the tags and labels.
      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=semver,pattern={{version}}
            type=raw,value=latest
      - name: Build and push Docker image
        id: push
        uses: docker/build-push-action@v6
        with:
          context: .
          file: Dockerfile
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}