Is your feature request related to a problem? Please describe.
Hello I'm coming from Pterodactyl which has a web ui, gamserver examples for like every game but without kubernetes support. I would like to migrate and fully use agones.

The problem I have, I just want to use agones. But it looks like I need to write almost everything by myself. And I wonder if I missing something here?

Describe the solution you'd like
Support for the eggs which are also only containers. So to run these should be possible.

Describe alternatives you've considered
Difficult to say, this means to reinvent the wheel. To create a gameserver like a rust or minecraft server is of course not only my wish.