I like the idea of using RH's UBI for having a more lightweight image. I doubt it will
make a whole lot of difference once Ceph is installed, but who knows. Ultimately, I think
choosing the option that will get the most reliable security fixes is the best option for
users. I think UBI probably fits that bill, but if that turns out to be CentOS Stream,
then we can do that as well.
This might be a good time to think about creating a new repo to build the image as well.
I'm not sure how much of ceph-container's complexity we really need to have for
building those images. IMO, having something a little more transparent might be better.
Blaine