docker-publish.yml

name: Build and Publish Docker Images

on:
  push:
    tags:
      - 'v*.*.*'
  workflow_dispatch:

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}
  CACHE_IMAGE: ghcr.io/deeplearnphysics/spine-buildcache:buildcache

jobs:
  build-spine:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write

    steps:
      - name: Checkout repository
        uses: actions/checkout@v6

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

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

      - name: Extract metadata (tags, labels) for spine
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=ref,event=pr
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=raw,value=latest,enable=${{ startsWith(github.ref, 'refs/tags/v') }}

      - name: Build and push spine image
        uses: docker/build-push-action@v5
        with:
          context: .
          file: ./docker/spine/Dockerfile
          platforms: linux/amd64
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          pull: true
          cache-from: |
            type=registry,ref=${{ env.CACHE_IMAGE }}
            type=gha,scope=spine-${{ github.ref_name }}
            type=gha,scope=spine-main
          cache-to: |
            type=registry,ref=${{ env.CACHE_IMAGE }},mode=max
            type=gha,scope=spine-${{ github.ref_name }},mode=max

  cleanup-old-images:
    runs-on: ubuntu-latest
    needs: [build-spine]
    if: github.event_name != 'pull_request'
    permissions:
      packages: write

    steps:
      - name: Delete old untagged spine images
        uses: actions/delete-package-versions@v5
        with:
          package-name: 'spine'
          package-type: 'container'
          min-versions-to-keep: 5
          delete-only-untagged-versions: 'true'