Rancher in an air-gapped(closed) network

Hello all.
Does anyone run Rancher inside a closed network?
I’ve started by porting the docker images for ranches server and agent into the network and follow the installation instructions.
Right of the bat it seems that it used icons from an outside website - because some icons cant be seen and the UI looks a bad.
Also, starting the agent fails due to the fact that it tries to go to dockerhub for the image.
So I had to play a trick on it, and tag the image from the internal repo as if it was a dockerhub one.

Does anyone even tries to run rancher outside the internet?

http://docs.rancher.com/rancher/v1.4/en/installing-rancher/installing-server/no-internet-access/

No modern version of the UI (at least a year ago) loads resources outside if the server container.

Hello Vincent.
Thank you so much for the link.
This is exactly what I need.
Thanks again.