Fresh docker install, mismatched port in config

[kingweee]

Hello, I recently deployed the docker version of your autoscan fork. When spinning up the container for the first time, the config that is automatically generated contains this line: "SERVER_PORT": 3467,

Per the docker compose script and the readme, the default port is 3468. This leads to a mismatch between the exposed container port and the port that the webserver in the container is running on.

It's an easy fix but it might trip someone up.