name: Docker

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

env:
  IMAGE_NAME: jcreek23/open-network-diagram

jobs:
  docker:
    runs-on: ubuntu-latest
    permissions:
      contents: read

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

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

      - name: Log in to Docker Hub
        if: github.event_name == 'push'
        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: docker.io/${{ env.IMAGE_NAME }}
          tags: |
            type=raw,value=latest,enable={{is_default_branch}}
            type=sha,prefix=sha-
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}

      - name: Build (PR) / Build+Push (push)
        uses: docker/build-push-action@v6
        with:
          context: .
          file: Dockerfile
          push: ${{ github.event_name == 'push' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max