Yeah for the IP address I’m sure you can just use localhost or 127.0.0.1 and then the port like you have since the IP is just your local machine and the correct port.
The point of the nginx-network is not even specific to NGINX itself, it’s actually just to have a Docker network setup so that the services can communicate with each other. I just named it nginx-network since instead of being specific to a certain app that you have deployed, it is the overall network for all of your apps since NGINX needs to communicate with all of them, so you have to have all of the apps on the same network. I think as long as your database container and app container are on the same Docker network it won’t matter what the network is called. The app container just needs to be able to communicate with the database container. Then, like I said you expose the app container’s server port to the outside world (your local machine) for HAProxy to send traffic to.
Let me know if that makes sense!
