Looking at the Qubes we can see how they handle the clipboard

X11docker with this function would be interesting

I was researching on and found xephyr + xclip

https://github.com/vn971/dotfiles/blob/master/bin/xephyr-xclip-get.rs
https://github.com/vn971/dotfiles/blob/master/bin/xephyr-xclip-put.rs

Thanks for building x11docker