Azure Linux 3 differences

[rapope36]

Describe the bug
I currently use mcr.microsoft.com/azure-cli as base docker image but it seems in the last version the base OS is changed to Azure Linux.
I run a series of commands over this base image (ex: groupadd) which in this last version requires tdnf install shadow-utils before using it.

I understood from support guys that they will move to Azure Linux 3 later this year and it seems it comes with some differences. Do you have some documentation over these changes?

ex: #3239