getty restarts then dies for variants that already have a shell

[mchaker]

Image I'm using:

metal-dev

Issue or Feature Request:

metal-dev boots and displays a login prompt. Then, the admin container starts and seems to try to take over tty0, which upsets getty and causes it to restart frequently, then die, making the local console unusable. :(

[bcressey]

I've noticed this too with aws-dev and been wondering whether it makes sense to drop the shell and console services there.

There are a couple of pieces missing, like the ability to cache container images at build time, and some sort of emergency rescue mode that enables the admin container.

But overall it could be a nice simplification that brings the *-dev variants more in line with everything else.