After new volumes were added to docker-compose.yml in the sogo-mailcow container, it is necessary to include the specified files in the path, in order for docker to correctly start after running `docker compose up` command, otherwise error will appear, as necessary files would be missing.
The files uploaded are original SOGo UI elements, obtained from the sogo-mailcow container. Whenever users will need to change the UI elements, they would just need to change these files. Hence simplifying the process.
This commit includes the addition of 3 lines, in the volumes part of the sogo-mailcow container, to allow for better customisation of the user interface on the web client page.
Amin