name: Docker publish (multi-arch)

on:
  push:
    branches: ["fix/**", "feat/**", "docker/**"]
  pull_request:
    branches: ["main"]

jobs:
  build:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
    env:
      IMAGE: ghcr.io/${{ github.repository_owner }}/open-webui
    steps:
      - uses: actions/checkout@v4

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3

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

      - name: Docker metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.IMAGE }}
          tags: |
            type=ref,event=branch
            type=sha
            type=raw,value=uidfix,enable=${{ startsWith(github.ref, 'refs/heads/fix/') }}

      - name: Login to GHCR (skip on PR)
        if: ${{ github.event_name != 'pull_request' }}
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Build (PR) / Build & Push (branch)
        uses: docker/build-push-action@v6
        with:
          context: .
          file: ./Dockerfile
          platforms: linux/amd64,linux/arm64
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max