Because, I love boomer shooters (specifically Doom2, Doom64, and Duke Nukem 3D) and wanted to use an actual use case that I would like to use myself in my tutorial class. As I built this, I realized there was a plethora of other awesome projects with very similar setups, but meh, why not one more?
This container is built on Debian Bookworm Slim instead of the spyware known as Ubuntu. Even though they abandoned the idea years ago, [people don't forget](https://www.eff.org/deeplinks/2012/10/privacy-ubuntu-1210-amazon-ads-and-data-leaks). If you are able to, move your containers to Debian.