I managed to get to the same point as you on a windows PC. I think the problem is that in linux we set a docker net to connect to the backend (nrp) container over 192.168.0.1. In the installer script:
$DOCKER_CMD network create -d bridge --subnet 192.168.0.0/24 --gateway 192.168.0.1 dockernet
This seems not to work on windows.
The reason why we do this is that we need to access nrp container ports from the other frontend container, and as they are mapped to host, basically we need to access the host's ports. And that is how people do it:
Though, we might change this and use instead docker IPs (172.17...). Will give it a try.