Jellyfin: Remove EXPOSE from dockerfile

[advancedslicedbanana]

Describe the bug
Even if user has selected different server port in config file, dockerfile will always expose 8096.

Expected behavior
Dockerfile should not expose ports.

Additional context
This is especially problematic when attempting to deploy two instances of Jellyfin on one system using Docker.

[IBlackI]

Not an issue, see Dockerfile reference.
The EXPOSE instruction does not actually publish the port. It functions as a type of documentation between the person who builds the image and the person who runs the container, about which ports are intended to be published.