Multi-user: allow admins to submit usernames

[oparoz]

OpenTerminal works in OWUI as a shared model with a mounted folder, via a docker compose and I thought the new multi-user feature would prevent me from having to setup a dedicated instance for each home user wanting to keep their notebooks private, but the permissions to run it in that mode are different it seems.
The docker won't start because it tries sudo useradd as soon as the user opens the terminal, which doesn't work.
Would it be possible to allow admins to submit an array of pre-created users?

[oparoz]

I just modified the compose file adding user: "0:0" to let it create the user and that works, but the files are not placed in the mounted folder.

[oparoz]

So, I had to change the docker compose to see the files:

    environment:
      HOME: /home
      OPEN_TERMINAL_MULTI_USER: true
    volumes:
      - /opt/terminal_workspace:/home

but then the owner of the folder is wrong (another user was picked by the script) and the terminal can't write to that folder, because it's run by another user.

[tjbck]

ensure_os_user() now skips sudo when already running as root. With user: "0:0" in your compose, user provisioning should work cleanly. The chown -R after useradd handles mounted volume ownership automatically.

For full container-per-user isolation, Terminals is recommended.