ceph/daemon-base has only packages installed

ceph/daemon is based from daemon-base and adds bash scripts and other tools.

ceph/ceph is actually an alias to ceph/daemon-base but with different tags (based on ceph/ceph.git releases)

> Can we simplify all of this to have a more consistent/streamlined
> approach, and/or reduce the # of images?  It seems like we could have just
> 2 images:
>
> ceph/daemon-base -- just the daemons + packages
> ceph/ceph -- daemon-base + the extra scripts (just for compat w/ existing users)

We could probably remove daemon-base and use ceph/ceph as a base image.

This requires to add ceph@master support to ceph/ceph build system.

> and then have tags like
>
> v14       - latest nautilus
> v14.2     - latest stable nautilus (same as above unless we are pre-release)
> v14.2.3   - specific point release

We already have this tags (except the z release) on ceph/ceph

> and then also
>
> v14-tip   - latest dev branch (daily)

>

> ...although the latter could actually come from quay.io/cephci if we fix
> the stupid ceph-build issue that is making it *only* build containers for
> wip-* branches.  In cephci, there'd be tags like

There's probably something that can be improved [1]

> When ceph-container.git updates, we could either do nothing or push a big
> button to rebuild everything?  I'm unclear on how often older images
> need to be rebuilt...

We already rebuild everything (ceph/daemon) when a commit in merged into ceph-container.git

Regards,

Dimitri

[1] https://github.com/ceph/ceph-container/commit/c84ba03c0c33cef88719638b3211916bc8b56242