[QUESTION] How to run an entire desktop environment from distrobox

[LiberQuack]

I tried to follow this post and some others to run a full desktop environment from the container
https://github.com/89luca89/distrobox/blob/main/docs/posts/run_latest_gnome_kde_on_distrobox.md#running-latest-gnome

But didn't achieve success my initial experiment was about running GNOME 45 on a Fedora 40 KDE HOST
My real goal, is to run steamOS ui from arch container

If someone (community/members) can give me some tips on how to troubleshoot/achieve it, I would appreciate it very much :)