Run firefox in docker container on raspberry pi - docker

Question

I've followed this thread
to build a docker container to run on Raspberry pi. I've managed to run it on a normal centos, but on pi I always get this error (I always run in mobaxterm application on windows 10 because it has x11 support):
Unable to init server: broadway display type not supported 'machinename:0'
Error: cannot open display: machinename:0
I've tried to build it with 2 different dockerfile, the 1st:
FROM resin/rpi-raspbian:latest
# Make sure the package repository is up to date
RUN apt-get update && apt-get install -y firefox-esr
USER root
ENV HOME /root
CMD /usr/bin/firefox
And tried to run it with this script:
#!/usr/bin/env bash
CONTAINER=firefox_wo_vnc
COMMAND=/bin/bash
DISPLAY="machinename:0"
USER=$(whoami)
docker run -ti --rm \
-e DISPLAY \
-v "/c/Users/$USER:/home/$USER:rw" \
$CONTAINER
$COMMAND
and I got the error :(
The 2nd that I've tried:
# Firefox over VNC
#
# VERSION 0.1
# DOCKER-VERSION 0.2
FROM resin/rpi-raspbian:latest
RUN apt-get update
# Install vnc, xvfb in order to create a 'fake' display and firefox
RUN apt-get install -y x11vnc xvfb firefox-esr
RUN mkdir ~/.vnc
# Setup a password
RUN x11vnc -storepasswd 1234 ~/.vnc/passwd
# Autostart firefox (might not be the best way to do it, but it does the trick)
RUN bash -c 'echo "firefox" >> /.bashrc'
And tried to run:
#!/usr/bin/env bash
CONTAINER=firefoxvnc
COMMAND=/bin/bash
DISPLAY="machinename:0"
USER=$(whoami)
docker run \
-it \
--rm \
--user=$USER \
--workdir="/home/$USER" \
-v "/c/Users/$USER:/home/$USER:rw" \
-e DISPLAY \
$CONTAINER \
$COMMAND
This way I can login via VNC but firefox is not running and I can't see actually anything just an empty desktop.
I've read many thread, I've installed xorg, openbox, x11 apps ...