This is basically how steam on Linux works.

Windows games are run inside wine

Wine is run in a container (they call the tech pressure vessel, the version of the container most games use is called sniper)

Linux native apps are not forced into a container, except they are on steamos, so guess its coming everywhere later

The container is based on ubuntu

QubesOS enjoyer?

The nice thing is you can give a container full hardware access if you wanted too. So if perf was a must, just steal the whole GPU for the container.

Though my ideal would be sidecar container to base desktop container. Just share what you need bus, and device wise.

idk docker has so much weirdness edge cases you have to build for, that you can do but I feel like a game should be pretty easy to just statically compile and call it a day. but I guess steam already has their runtime that tries to do the same thing

Pretty much how AMP by CubeCoders works. It's all docker containers