can run docker with root being the user, things work, just could be prettier

Dockerfile

@@ -4,6 +4,10 @@ WORKDIR /usr/local/ur_simple_control
 # copy repo to workdir
 COPY . .
 
+# install pyhton3-tk without questions
+ARG DEBIAN_FRONTEND=noninteractive
+ENV TZ=Europe/Stockholm
+
 RUN apt update && apt upgrade
 RUN apt install -y python3  \
                 python3-pip \

docs/installing_ubuntu.md

@@ -57,7 +57,7 @@ After installing Docker, navigate to this project's directory in your CLI.
 Then:
 1. build the image with "docker build -t ur_simple_control ."
 TODO: add volume mounting (copy Marcus' approach with a user and /home/user/) and networking (put it to host)
-2. run the image with "docker run --rm -it --user root ur_simple_control"
+2. run the image FIRST RUN "xhost +", THEN RUN  "docker run --rm -it --net=host -e DISPLAY=$DISPLAY -v /tmp:/tmp ur_simple_control"
 
 #### option 2) Native installation
 1. Either create a disk partition for Ubuntu on your hard drive, or use an external hard drive. In the first case, you might need to shrink your existing partition. Searching for "how to create a disk partition [your_OS]" or "install ubuntu on [your_OS]" will get you all the information you need. Ideally, back up your data before any of this (you should be doing this in general as it's good practice).