Docker

The easier way to face permissions issues with files created inside the docker

When you run a docker image like Ubuntu, the default user is root.
So that if you run it by sharing a personnal folder from host with option -v, created files won't be readable or writtable for you.
To fix that, don't think about chown or chmod, there is only one command to run inside your docker container.


• at runtime:
• docker run --rm -it -v ${HOME}/folder:/mnt/shared ubuntu:22.04 bash
• >umask 0



• at docker creation, add these commands just before your ENTRYPOINT:
• RUN useradd appuser --create-home
  WORKDIR /home/appuser
  USER appuser
  RUN umask 0