name: Build and Publish Container Image

on:
  push:
    branches:
      - main
    tags:
      - "v*"

env:
  # The deployed image is forgejo.coulomb.social/coulomb/key-cape (recorded in
  # KEY-WP-0013). This previously read 92.205.130.254:32166, so the tag a push
  # produced and the tag the cluster ran were not obviously the same artifact
  # (KEY-WP-0026). Overridable via a repository variable if the runner needs the
  # address rather than the name.
  REGISTRY: ${{ vars.REGISTRY || 'forgejo.coulomb.social' }}
  IMAGE_NAME: coulomb/key-cape

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

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

      - name: Login to Gitea registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ secrets.REGISTRY_USER }}
          password: ${{ secrets.REGISTRY_TOKEN }}

      - name: Extract metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=raw,value=latest,enable={{is_default_branch}}
            type=sha,prefix=main-,format=short,enable={{is_default_branch}}
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=semver,pattern={{major}}

      - name: Build and push
        uses: docker/build-push-action@v5
        with:
          context: .
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max