Running Chromium inside Docker - Gtk: cannot open display: :0

Question

When I try to run chromium inside a docker container I see the following error: Gtk: cannot open display: :0

Dockerfile: (based on https://registry.hub.docker.com/u/

Answer 1

Adding as reference (see real answer from greg)

In Docker image add

RUN apt-get update
RUN apt-get install -qqy x11-apps

https://people.ece.cornell.edu/skand/post/x-forwarding-on-docker/

and then run

sudo docker run \
    --rm \ # delete container when bash exits
    -it \ # connect TTY
    --privileged \
    --env DISPLAY=unix$DISPLAY \ # export DISPLAY env variable for X server
    -v $XAUTH:/root/.Xauthority \ # provide authority information to X server
    -v /tmp/.X11-unix:/tmp/.X11-unix \ # mount the X11 socket
    -v /home/alex/coding:/coding \
    alexcpn/nvidia-cuda-grpc:1.0 bash

check a sample command

xclock