System: Ubuntu 16.04
I'm trying to create a docker container
FROM ubuntu:latest where a GUI-Application is running in.
The application needs to get executed with sudo to access the inside used commands.
I followed the instruction of this Blog and adapted it for my use.
After i build this container I first ran it with:
docker run -ti --rm -e DISPLAY=$DISPLAY -v /tmp/.X11-unix/:/tmp/.X11-unix repo-test-3 /bin/bash
and the application is shown at the screen.
The next I tried to run the same container with
-u 0 to become root and after i tried to start the application the following error message appears:
No protocol specified QXcbConnection: Could not connect to display :0 Aborted (core dumped)
Do you have any idea whats the problem and how I can fix this?