name: Publish Docker Image

on:
  push:
    tags:
      - 'v*'
  workflow_dispatch:

permissions:
  contents: read

jobs:
  docker:
    runs-on: ubuntu-latest
    env:
      IMAGE_NAME: ${{ vars.DOCKERHUB_IMAGE }}
    steps:
      - name: Validate Docker Hub image name
        run: |
          if [ -z "${IMAGE_NAME}" ]; then
            echo "Repository variable DOCKERHUB_IMAGE must be set, for example yusufipk/openframe" >&2
            exit 1
          fi

      - name: Checkout repository
        uses: actions/checkout@v4

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

      - name: Log in to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Extract Docker metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.IMAGE_NAME }}
          tags: |
            type=ref,event=tag
            type=raw,value=latest,enable=${{ startsWith(github.ref, 'refs/tags/v') }}
            type=sha,prefix=sha-

      - name: Build and push Docker image
        uses: docker/build-push-action@v6
        with:
          context: .
          file: ./Dockerfile
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max