I made the earlier suggestion with the thought that a message on the console when "docker run" might tell the user that they need to log out before stopping to commit the docker container to a new docker image.
I am thinking of adding "docker commit instructions" to the README as well as the console message above until the issue is resolved.
Originally posted by @Tiryoh in https://github.com/Tiryoh/docker-ros2-desktop-vnc/issues/131#issuecomment-2002516191