oci-publish.yml

name: Publish OCI image to ghcr.io

on: workflow_dispatch

permissions: {}

jobs:
  publish:
    runs-on: ubuntu-24.04
    permissions:
      contents: read
      packages: write

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

      - name: OCI metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ghcr.io/${{ github.repository }}
          tags: |
            # Add short SHA as OCI tag
            type=sha
            # Set latest tag for default branch
            type=raw,value=latest,enable={{is_default_branch}}
          # Overwrite some generated OCI labels
          labels: |
            org.opencontainers.image.authors=libvips team and contributors
            org.opencontainers.image.url=https://libvips.org
            org.opencontainers.image.documentation=https://github.com/${{ github.repository }}
            org.opencontainers.image.source=https://github.com/${{ github.repository }}
            org.opencontainers.image.vendor=libvips
            org.opencontainers.image.title=OCI image for ${{ github.repository }}
            org.opencontainers.image.description=OCI image for cross-compiling Windows binaries

      - name: Login to GitHub Container Registry
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Build and push
        uses: docker/build-push-action@v6
        with:
          context: .
          file: ./container/base.Dockerfile
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}