root user

[bilak]

Hello, I'm running the hassio on intell nuc. Seems like currently there is no option how we can create a system user. What are our options to run containers under user different from root?
I know that I can create system user directly from console with useradd command, however I'm not quite sure if this user is being backed up so if I do fresh installation from backup will it work? I mean will be custom user created so containers will be able to startup?

Thanks