LogStash version - getting logs in, from non-docker source

[cloudlady911]

Is there any plan on doing a newer version of logstash? This template runs 1.5.

Also, what would be a good way to get IIS logs from outside my docker environment into logstash? The server is questions is already setup to use GELF, but I don't know how to configure the inputs on this build. Won't any settings I add to the config file be overwritten if the containers move from one server to another?