Arvados

We generally expect our packages to be used with the distro Ruby, and we're trying to get away from supporting RVM. It seems to me like we would get better results all around if our package-build-dockerfiles used the distro Ruby: we can save ourselves all the build overhead, and increase our confidence the stack is compatible with what our users will be using.

Like Python, we may need to use Ruby appstreams to support RHEL-based distributions. The latest Ruby available in rocky8 is 3.1, which is plenty fine as of this writing.

If a distro has a Ruby that's older than we want to support, that should be a cue we should consider ending support for that distro.