Request: I am using Zima OS on my ZimaCube with an A2000 graphics card. It would be fantastic not only for that specific hardware to run „Steam“ headless.
I found actually two projects which seem to make this possible, although (at least for me) it is a rather complex dockerfile. The goal would be to install all games on my NAS and play the games by using SteamLink, or as with some clients directly from the Steam App (shows link automatically to the remote „server“).
An optional possibility would be „Games on Whales“ GitHub - games-on-whales/gow: A collection of Dockerized games and apps like Steam, Firefox and Retroarch - which uses Moonlight, Sunshine instead of SteamLink.