name: Prune temporary docker images

on:    
  schedule:
    - cron:  '15 4 * * 6'

  workflow_dispatch:

jobs:
  prune-images:
    runs-on: ubuntu-latest

    steps:
      -
        name: Checkout
        uses: actions/checkout@v2

      - 
        name: Delete old temporary images
        run: |
          # the following command may fail because github package doesn't allow 
          # deletion if only one image exists or if DOCKER_MANAGEMENT_TOKEN is not 
          # setup. This shouldn't create any alarm as temporary image deletion is 
          # not a critical activity.
          python ./.github/workflows/ci_scripts/ghcr_utils.py -u ${{ github.actor }} -p ${{ secrets.DOCKER_MANAGEMENT_TOKEN }} delete-old-images -r mbed-os-env-tmp || true