Permissions failure when starting container with non-Root user

[ruhlmcu]

When i attempt to start my octoprint container with a non-Root user this user I get errors and octoprint doesnt start. When defaulting to Root (removing the user= line in docker-compose) it starts and runs as i expect.

The error thrown is: ensuring user provided files have correct perms...s6-chown: fatal: unable to chown /var/run/s6/etc/cont-init.d/v3-dir-structure-check: Operation not permitted. This error is repeated for other attempts to chown other files and directories.

I have checked and I believe all of the files and directories used to start octoprint from docker are using the correct permissions.

What data can I provide to help you help me troubleshoot this problem?