Purge old containers from dockerhub?

There are 10s of GB, possibly in excess of 100 GB, of old containers on Dockerhub that have not been accessed in a long time. Layer caching probably reduces the total but even so, it seems extreme. How would people feel about deleting containers that have not been pulled in, say, 1+ years? Conceivably that will break a build for someone doing archaeology down the line but I see no other drawbacks. Ping @rpavlik @KhronosWebservices as khronosgroup members on dockerhub (I would also ping Lorenzo but I do not know their github handle).

https://hub.docker.com/repository/docker/khronosgroup/docker-images/image-management?sortField=last_pulled&sortOrder=asc

Start with the linked Docker Hub image-management page and review the oldest containers by last-pulled date. The issue does not name repository files or tests; clarify the retention rule, affected images, and ownership with the mentioned Khronos maintainers before treating the cleanup as complete.

Written by the indexing model from the issue text.