delete-untagged-images.yml

name: Delete Untagged Packages

env:
  PER_PAGE: 100

on:
  workflow_dispatch:
  workflow_run:
    workflows: ["Docker Build"]
    types:
      - completed

jobs:
  delete-untagged:
    runs-on: ubuntu-latest
    steps:
      -
        run: |
          echo "PACKAGE_NAME=${GITHUB_REPOSITORY,,}" >> ${GITHUB_ENV}
          echo "OWNER=orgs/${GITHUB_REPOSITORY_OWNER,,}" >> ${GITHUB_ENV}
      -
        uses: actions/github-script@v6
        with:
          github-token: ${{ secrets.DELETE_PACKAGES_TOKEN }}
          script: |
            const response = await github.request("GET /${{ env.OWNER }}/packages/container/${{ github.event.repository.name  }}/versions",
              { per_page: ${{ env.PER_PAGE }}
            });

            const pages = (function() { 
                if (typeof response.headers.link !== 'undefined') {
                return response.headers.link.split(">").slice(-2)[0].split('=').slice(-1)[0]
                }
                return 1;
            })();

            console.log("Total pages: " + pages);
            
            for (let page = pages; page >= 1; page--) {
              console.log("Processing page " + page)
              
              const response = await github.request("GET /${{ env.OWNER }}/packages/container/${{ github.event.repository.name  }}/versions",
              { 
                  per_page: ${{ env.PER_PAGE }},
                  page: page
              });
              
              for (version of response.data) {
                if (version.metadata.container.tags.length == 0) {
                    console.log("delete " + version.id)
                    const deleteResponse = await github.request("DELETE /${{ env.OWNER }}/packages/container/${{ github.event.repository.name }}/versions/" + version.id, { });
                        console.log("status " + deleteResponse.status)
                }
              }
            }