name: Publish Docker image

on:
  push:
    branches: [master]
  release:
    types: [published]

jobs:
  push_to_registry:
    name: Push Docker image to Docker Hub
    runs-on: ubuntu-latest
    permissions:
      contents: read
    steps:
      - name: Check out the repo
        uses: actions/checkout@v7

      - name: Log in to Docker Hub
        uses: docker/login-action@f4ef78c080cd8ba55a85445d5b36e214a81df20a
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}

      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@c299e40c65443455700f0fdfc63efafe5b349051
        with:
          images: cproofdev/cproof
          tags: |
            type=raw,value=dev,enable={{is_default_branch}}
            type=sha,prefix=nightly-,enable={{is_default_branch}}
            type=ref,event=tag
            type=raw,value=latest,enable=${{ startsWith(github.ref, 'refs/tags/') }}

      - name: Build and push Docker image
        id: push
        uses: docker/build-push-action@2bd26e71295ee32cbf6a73510d165bf7232460f3
        with:
          context: .
          file: ./ci/Dockerfile
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}