X11 forwarding of a GUI app running in docker

Question

First off: I have read the answers to similar questions on SO, but none of them worked.

The situation:

• App with GUI is running in a docker container (C

Answer 1

This works in any scenario.

Install xhost if you don't have it. Then, in bash,

export DISPLAY=:0.0
xhost +local:docker

After this run your docker run command (or whatever docker command you are running) with -e DISPLAY=$DISPLAY