@Carin, I’ve checked this article before posting message.
1 I’m using Dockerfile from yours example and it uses debian:buster, not ubuntu which as i understand could have app-armor problem
2 Anyway, i tried to setup app-armor as described in documentation:
root@d8943e1ba353:# apt-get install apparmor-utils
root@d8943e1ba353:# aa-complain /etc/apparmor.d/docker
Profile for /etc/apparmor.d/docker not found, skipping
should i run it on HOST system? I’ve checked system logs and i unable to find any related to permissions logs
3 I’ve checked NoMachine logs and see “Error: Cannot create a new display, please contact your system administrator'”, but why this is happening?
4. is there any tutorial how i could connect NoManiche to already created x11 screen?