Doesn't a tipical unix (Linux) factory use X-Boxs for terminal display of their Server Account?
You need about 10 or 15 big VNC type servers.
But if you insist on madness, use the PXE, proxy ftp, and a lot of disk space.
As I understand it, one can boot, install, or install and check for new install, or install and check for updates. But that's over my head.
You'll need 3 or 4 boxes just to get started.
Time to Google and read.
Do the Math