Hi WickedGoat98
Regardless on the ingress configuration (which seems like you have the hang of), the API instance itself needs to be configured with persistent volume (the web / file server do not need direct access to the API server).
Can you get the API to run properly ?

Regrading the trains-agent once you have the API/Web/File server configured, you can configure it like the trains-agent-services is configured inside the docker-compose (e.g. set the environment variable with the correct configuration)
(do not forget to use the trains-agent docker instead https://hub.docker.com/r/allegroai/trains-agent )

https://github.com/allegroai/trains-server/blob/b93591ec322662156eab1ef90cf8151b81149488/docker-compose.yml#L116