Docker reason: connect ECONNREFUSED 0.0.0.0:80
The default port for http connections is 80 and your application listens on 5000. So when you trying to connect to 0.0.0.0:80, where nothing is listening, the connection is refused.
The default port for http connections is 80 and your application listens on 5000. So when you trying to connect to 0.0.0.0:80, where nothing is listening, the connection is refused.