docker-image.yml

name: Create and publish Docker images

on:
  release:
    types:
      - published
  workflow_dispatch:
    inputs:
      pr_number:
        description: 'PR number (for PR builds)'
        required: false
        type: string
      pr_ref:
        description: 'PR branch ref (for PR builds)'
        required: false
        type: string
      pr_sha:
        description: 'PR SHA (for PR builds)'
        required: false
        type: string

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  build-and-push-image:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          ref: ${{ inputs.pr_sha || github.sha }}
          fetch-depth: 0

      - name: Fetch PR if building for PR
        if: inputs.pr_number
        run: |
          echo "Building for PR #${{ inputs.pr_number }}"
          echo "PR SHA: ${{ inputs.pr_sha }}"
          echo "PR Ref: ${{ inputs.pr_ref }}"
          
          # Try to fetch the PR head directly (works for both forks and same-repo PRs)
          if git fetch origin pull/${{ inputs.pr_number }}/head:pr-${{ inputs.pr_number }}; then
            echo "✅ Successfully fetched PR via pull/${{ inputs.pr_number }}/head"
            git checkout pr-${{ inputs.pr_number }}
          else
            echo "⚠️ Failed to fetch via pull/ ref, trying to checkout SHA directly"
            # Fallback: try to checkout the SHA if it exists
            if git checkout ${{ inputs.pr_sha }}; then
              echo "✅ Successfully checked out SHA ${{ inputs.pr_sha }}"
            else
              echo "❌ Failed to checkout PR. Using current ref."
              exit 1
            fi
          fi
          
          # Verify we're on the right commit
          CURRENT_SHA=$(git rev-parse HEAD)
          echo "Current SHA: $CURRENT_SHA"
          echo "Expected SHA: ${{ inputs.pr_sha }}"
          
          if [ "$CURRENT_SHA" = "${{ inputs.pr_sha }}" ]; then
            echo "✅ Successfully checked out correct commit"
          else
            echo "⚠️ Warning: Current SHA doesn't match expected SHA"
          fi

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

      - name: Log in to the Container registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Get lowercase repo name
        run: |
          REPO_NAME=${{ env.IMAGE_NAME }} 
          echo "LOWER_CASE_REPO_NAME=${REPO_NAME,,}" >> $GITHUB_ENV

      - name: Get version for tagging
        run: |
          if [ "${{ github.event_name }}" == "release" ]; then
            RELEASE_VERSION="${{ github.event.release.tag_name }}"
            echo "VERSION=${RELEASE_VERSION}" >> $GITHUB_ENV
          elif [ "${{ github.event_name }}" == "workflow_dispatch" ] && [ -n "${{ inputs.pr_number }}" ]; then
            PR_NUMBER="${{ inputs.pr_number }}"
            echo "VERSION=pr-${PR_NUMBER}" >> $GITHUB_ENV
          elif [ "${{ github.event_name }}" == "workflow_dispatch" ]; then
            BRANCH_NAME="${{ github.ref_name }}"
            echo "VERSION=${BRANCH_NAME}" >> $GITHUB_ENV
          fi

      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=ref,event=branch
            type=ref,event=tag
            type=raw,value=latest,enable=${{ github.event_name == 'release' }}

      - name: Build and push Docker image
        uses: docker/build-push-action@v5
        with:
          context: .
          platforms: linux/amd64
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max

      - name: Output build information
        run: |
          echo "✅ Docker images built and pushed successfully!"
          echo "🐋 Images:"
          echo "${{ steps.meta.outputs.tags }}" | sed 's/^/  - /'
          echo "📝 Event: ${{ github.event_name }}"
          if [ "${{ github.event_name }}" == "release" ]; then
            echo "📝 Triggered by release: ${{ github.event.release.tag_name }}"
          elif [ -n "${{ inputs.pr_number }}" ]; then
            echo "📝 Triggered by comment on PR #${{ inputs.pr_number }}"
            echo "📝 PR branch: ${{ inputs.pr_ref }}"
            echo "📝 PR SHA: ${{ inputs.pr_sha }}"
          else
            echo "📝 Triggered by manual workflow dispatch on branch: ${{ github.ref_name }}"
          fi