Change id of local matlab user for permissions

[arunoruto]

I am currently implementing a small bash script, which would launch an individual Matlab instance per user via Docker. Here is my current progress, and I can launch it for all three "versions" (X11, browser, VNC):

#!/usr/bin/env bash

IMAGE="mathworks/matlab"
VERSION="r2024b"
LICENCE="<path to licence file>"

SHM_SIZE="512M"

COMMAND_END=""
COMMAND_PARAM="-e DISPLAY=${DISPLAY} -v /tmp/.X11-unix:/tmp/.X11-unix:ro"
if [ -z "${1}" ]; then
  xhost +
else
  case $1 in
    "browser")
    COMMAND_PARAM='-p 8888:8888'
    COMMAND_END='-browser'
    ;;

    "vnc")
    COMMAND_PARAM='-p 5901:5901 -p 6080:6080'
    COMMAND_END='-vnc'
    ;;

    *)
    echo "'${1}' is not a valid flag. Please use 'browser' or 'vnc' for the respective protocoll or nothing for X11"
    exit 1
    ;;
  esac
fi

eval 'docker run --init -it --rm \
  ${COMMAND_PARAM} \
  --user ${UID}:${GID} \
  -e MLM_LICENSE_FILE="/network.lic" \
  -v ${LICENCE}:/network.lic \
  -v ${HOME}:/home/matlab/workdir \
  --shm-size=${SHM_SIZE} \
  ${IMAGE}:${VERSION} \
  ${COMMAND_END}'

When running the script (with VNC), I get the following permission error:

/bin/run.sh: 51: cannot create //.bashrc: Permission denied

Is there a way to make these things available for any user/group ID? Or are there any security reasons for doing so?
It would be nice to change the user ID inside the container without building a new image per user :)

[michaelmcdonnellmw]

Hi @arunoruto

Thanks for highlighting your use case for setting the UID and GID at run time in the container, this is something that we are investigating and will feed back here when we have more information on the matter