Points to discuss prior to creating policy.

1. Further document contribution of custom images to profile list.
2. Quotas for each user home directory. Either by providing message or hard cap.
3. Scratch directory for each user that is cleaned up after 30 days.
4. Shared directories for specific projects.
5. Alternative options for Datalad, since Datalad Dandisets creates many files for each user.
6. Remove cache directories for migrations (e.g. cache, nwb-cache, py-cache, yarn-cache).