blumeops/.forgejo/actions/build-push-image/action.yaml

name: 'Build and Push Image'
description: 'Build a container image with Docker and push to registry.ops.eblu.me using skopeo'

# Note: Uses skopeo for push because Docker 27's manifest format has compatibility
# issues with zot registry. Skopeo handles manifest conversion correctly.

inputs:
  context:
    description: 'Build context path'
    required: true
  dockerfile:
    description: 'Dockerfile path (relative to context)'
    required: false
    default: 'Dockerfile'
  image_name:
    description: 'Image name (without registry, e.g. blumeops/devpi)'
    required: true
  version:
    description: 'Version tag (e.g. v1.0.0)'
    required: true
  registry:
    description: 'Registry URL'
    required: false
    default: 'registry.ops.eblu.me'

runs:
  using: 'composite'
  steps:
    - name: Build image
      shell: bash
      run: |
        echo "Building ${{ inputs.image_name }}:${{ inputs.version }}"
        docker buildx build \
          --tag ${{ inputs.image_name }}:${{ inputs.version }} \
          --file ${{ inputs.context }}/${{ inputs.dockerfile }} \
          ${{ inputs.context }}

    - name: Push to registry
      shell: bash
      run: |
        echo "Saving image to tarball..."
        docker save ${{ inputs.image_name }}:${{ inputs.version }} -o /tmp/image.tar

        echo "Installing skopeo..."
        apk add --no-cache skopeo >/dev/null 2>&1 || apt-get update && apt-get install -y skopeo >/dev/null 2>&1 || true

        echo "Pushing ${{ inputs.registry }}/${{ inputs.image_name }}:${{ inputs.version }}"
        skopeo copy \
          docker-archive:/tmp/image.tar \
          docker://${{ inputs.registry }}/${{ inputs.image_name }}:${{ inputs.version }}

        echo "Pushing ${{ inputs.registry }}/${{ inputs.image_name }}:${{ github.sha }}"
        skopeo copy \
          docker-archive:/tmp/image.tar \
          docker://${{ inputs.registry }}/${{ inputs.image_name }}:${{ github.sha }}

        rm -f /tmp/image.tar

    - name: Summary
      shell: bash
      run: |
        echo "Built and pushed:"
        echo "   ${{ inputs.registry }}/${{ inputs.image_name }}:${{ inputs.version }}"
        echo "   ${{ inputs.registry }}/${{ inputs.image_name }}:${{ github.sha }}"
        echo ""
        echo "Registry tags:"
        curl -sf "https://${{ inputs.registry }}/v2/${{ inputs.image_name }}/tags/list" | jq -r '.tags[]' 2>/dev/null | sort -V | tail -10 || true