name: Docker

on:
  push:
    branches: [ "master" ]
    # Publish semver tags as releases.
    tags: [ 'v*.*.*' ]

env:
  REGISTRY: gitea.b4tman.ru
  IMAGE_NAME: ${{ gitea.repository }}

jobs:
  build:
    runs-on: cth-ubuntu-latest
    permissions:
      contents: read
      packages: write
      id-token: write
    
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
      
      - name: Install cosign
        uses: sigstore/cosign-installer@v3.5.0
        with:
          cosign-release: 'v2.2.4'
      
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3.0.0

      - name: Log into registry ${{ env.REGISTRY }}
        uses: docker/login-action@v3.0.0
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ gitea.actor }}
          password: ${{ secrets.PKGS_TOKEN }}
      
      - name: Extract Docker metadata
        id: meta
        uses: docker/metadata-action@v5.0.0
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          flavor: |
            latest=${{ github.ref == 'refs/heads/master' }}            
          tags: |
            type=ref,event=branch
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
          labels: |
            maintainer=${{ gitea.actor }}
            org.opencontainers.image.description="${{ steps.get_description.outputs.description }}"
            org.opencontainers.image.authors=${{ gitea.actor }}
            org.opencontainers.image.licenses=MIT
      
      - name: Build and push Docker image
        id: build-and-push
        uses: docker/build-push-action@v5.0.0
        with:
          context: .
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
      
      - name: Sign the published Docker image
        env:
          TAGS: ${{ steps.meta.outputs.tags }}
          DIGEST: ${{ steps.build-and-push.outputs.digest }}
        run: echo "${TAGS}" | xargs -I {} cosign sign --yes {}@${DIGEST}