docker-pull.yml

name: docker-pull

on:
  schedule:
    - cron: 0 0 1 * *

jobs:
  docker-pull:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - name: Pull images
        run: |
          lastrepo=""
          lastseen=""
          images=()

          for image in $(cat legacy-docker-images.txt); do
              images+=("${image}")
          done

          for module in tools/*; do
              if [ -f "$module"/Dockerfile ]; then
                  images+=($(echo "luslab/nf-modules-${module##*/}:$(cat "$module"/VERSION)"))
              fi
          done

          for image in "${images[@]}"; do
              # Parse repository name, we will remove the previous image if different
              readarray -d : -t repository <<< "$image"
              if [ "${lastseen}" != "" ] && [ "${repository[0]}" != "${lastseen}" ]; then
                  printf "Removing image ${lastseen} to make room."
                  docker rmi "${lastrepo}" || docker rmi "${lastseen}"
              fi
              lastrepo="${repository[0]}"
              lastseen="${image}"
              printf "Pulling $image\n";
              docker pull "${image}"
          done