@Gosha Check your nginx logs?

no live upstream, eventhough the docker containers are running I can open our subdomain on port 5555 though

I’d probably trying setting up a little express server on 300 to see if it makes a difference

I made it work, was an error in docker container, thank you!

can you let us know what the error was? will help us help others troubleshoot

@Colin - Krumware.env-file hasn't been provisioned to the container environment properly, so the container with the webapp wasn't starting, hence resulting in bad gateway