NPM via Docker Swarm Network Passing External IP Address

[wwfii]

I have tried several of the recommendations on this site to pass the external IP address through the reverse proxy to a web-server, and the resulting IP is always the same: 10.0.0.2

I’m beginning to think the issue may stem from the fact that I’m leveraging NPM via the docker swarm network? Is it possible to pass an external IP address through the reverse proxy to an internal server?