container tags

I noticed that ceph/ceph has tags like v14 v14.2 v14.2.2 v14.2.2-20190830 whereas ceph/daemon-base has tags like latest-master latest-nautilus latest-mimic but no version tags. Is there a reason for the difference? Should we be using ceph/ceph or ceph/daemon-base? What's the difference? That tags for ceph/ceph seem more intuitive/useful for users, although it seems like we really want both latest-* and v* tags. Thanks! sage