This issue in particular addresses the refactoring of the register_client function that is use throughout the authentication scripts and consolidate the Dockerfiles into one file with multiple targets and entry points for each component.

Completed Tasks:

• Move register_client to a shared_utils.py file within kagenti/auth
• Create multi-target Dockerfile for ui-auth and client-registration-auth
• Modify appropriate Docker build calls within the automation to invoke the right build for the two functions
• Test that the new invocation work with the kagenti installer

Additional context

This issue is part of a bigger refactor whose tasks are listed here.