Update and backup for RasPi docker installation

Hi everyone. I have received a notification of an update available but can’t figure out how to do it.
Browsing available info I found a guide mentioning “Supervisor” tab where these functions apparently are located but there is no such tab in my Docker.
Here’s my system info:

Version core-2021.9.0
Installation Type Home Assistant Container
Development false
Supervisor false
Docker true
User root
Virtual Environment false
Python Version 3.9.6
Operating System Family Linux
Operating System Version 5.10.60-v7+
CPU Architecture armv7l

Help please.