How to add non root user in production image

snapcraft
1

Hi,
In our gateway, we need to add some non root users when production, for example default user can login in command line interface. We modified /etc/passwd and /etc/shadow to add the user before. Is there any way I can add non root user in ubunto core when production? It needs to run automatically, so sudo adduser --extrausers test will not be acceptable.

Thank you.
2

you can use a system-user assertion from a usb stick

(that needs to be signed by your brand account that was used to create the model assertion your image was built with)

if you have a brand store

then you also have the ability to pre-install an agent or configuration snap that utilizes the snapd-control interface to talk to snapd via and API

to call the create-user endpoint (helps also to create per-device-users centralized from a central server)