CMS self hosting custom theme install and domain name pointing

To be completed by the original poster:

CMS Version 4.2.2

Specify the full CMS version you are using, including the revision number.

Installation Method docker

Docker or Custom install

Operating System ubuntu 24.04

The operating system the CMS is installed on

Issue

I purchased a white label cms when i was using cloud hosting but i have gone to self hosting via ionos vps and i am trying to find out how i download my theme and what command i need to use to get it to download to the correct place. Can anyone help me on this matter please?

I am also trying to change my login page from the IP its currently logging in as to a domain name and im not sure where i need to change that i think it’s in the config.env file but not sure any help on this one would also be very appriciated