Proxy to other docker containers

[jrichet]

How do I connect to other docker containers?

I've tried connecting to localhost/127.0.0.1 on an alternate port exposed in those containers, but no joy. Is there a trick I'm not aware of?

I keep getting a 502.

It would be super helpful if the documentation included some troubleshooting tips

[jc21]

I assume you're running your NPM docker image in bridge mode, which is the default. In this mode 127.0.0.1 only connects back to the NPM docker image network stack, not the host machine.

You have 3 options:

1. Run NPM in host mode.
2. Add your other services to the bridge network stack: add them as services in the docker-compose.yml file and connect to them using the service name as the hostname.
3. Connect to your other services by the machine's host IP address on the local network, ie: 192.168.1.50.