Basic idea is to set this up mostly like fnkits:
- a central-web webserver
- a bluearc filetree** upload app for tarballs
- tool to add packages
This would need storage comparable to current fnkits + scisoft; plus Room to Grow; currently around 4TB,
but we could start smaller knowing it can grow that big.
We now have https://spack-cache-1.fnal.gov/ which is the site binary image cache, and could also host source tarfiles.