[Feature]: Make app run as non-root in container

[rugk]

Related Problem

It is a security best practice to make your service run as non-root inside the container: https://docs.docker.com/build/building/best-practices/#user

Especially when it is executed in a rootful way this increases the security.

Proposed Feature

Adjust the Dockerfile to drop permissions when not necessary (anymore).

Alternatives Considered

No response

Benefits

See https://stackoverflow.com/a/68190847/5008962

Additional Context

No response

[orangecoding]

You want to create a pr for this? ;) @rugk