Add a new pod/container

The prebuild pods are working on my server, i want to add a new pod ([collabora](https://nextcloud.com/collaboraonline/)) to edit documents in nextcloud. There are many documentations how to achieve this in a docker setup. Team-Container installs new pods with _helm_ but i don't understand the configuration in 7+ different yaml-files.
The ports need to be set (for traefik?)?
How/where does traefik get/knows the new subdomain for the certificate?

[Install Collabora with docker](https://www.collaboraoffice.com/code/docker/)
[Helm Collabora-Code](https://github.com/helm/charts/tree/master/stable/collabora-code)

How can i add/configure a new pod to the existing ones?

Start by examining the existing prebuild pod configuration and the seven-plus Helm YAML files used by Team-Container. Review the linked Collabora Docker and Helm documentation, then trace how ports, Traefik routing, subdomains, and certificates are configured. Done means a documented, working way to add and access a Collabora pod alongside the existing containers.

Written by the indexing model from the issue text.