x11docker: Setup where user can't see that it is running in container

Hi @mviereck, I would like to make the best setup using x11docker which will have following features:

• will be isolated (so -h is not good idea)
• will have good GPU acceleration performance & low latency (so --xpra and everything that is similar like --xpra-xwayland are not fitting my needs)
• and the most important: It will be invisible that app is running in container (it should look like normal app launched from host. For example --xwayland and --xpra-xwayland are starting compositor so it is not looking like common app. --xpra-xwayland has the best effect but it is slow)

I am trying to find such setup for a quiet long time and best option that may work (maybe I am wrong here) is --xorg. It has GPU performance as good as host and it’s isolated.

The problem is that I need this container to look, behave and launch as normal app launched from host. Using --xorg I am redirected instantly to new TTY and I need to switch TTY using <CTRL><ALT><F1>....<F12> to use host or container.

I would like to see windows from newly created TTY (using --xorg) e.g. tty10 on my host’s display (tty2) next to normal host’s apps. So I need exactly the same effect as --xpra-xwayland gives me but with better GPU performance and lower latency.

So I need to merge two TTYs. Is it even possible? If not what is the alternative to have these 3 features in my setup?

Thanks for help