Run QT5 gui app in Docker container

Dockerfile

FROM ubuntu:bionic

RUN mkdir /app
COPY requirements.txt icons_rc.py main.py mainwindow_ui.py config.json /app/
RUN apt-get update && \
    apt-get install -y python3 python3-pip xvfb libqt5x11extras5 && \
    pip3 install -r /app/requirements.txt

run.sh

docker run -it \
--user $(id -u) \
-e DISPLAY=unix$DISPLAY \
--workdir=/app \
--volume="/home/$USER:/home/$USER" \
--volume="/etc/group:/etc/group:ro" \
--volume="/etc/passwd:/etc/passwd:ro" \
--volume="/etc/shadow:/etc/shadow:ro" \
--volume="/etc/sudoers.d:/etc/sudoers.d:ro" \
-v /tmp/.X11-unix:/tmp/.X11-unix \
someone/something:version \
python3 main.py --cfg config.json