(node:20) UnhandledPromiseRejectionWarning: Error: Error querying the database: An error occured during the attempt of performing I/O: Connection refused (os error 111). Docker code example

Example: docker windows browser can't see the server

If you’re using Docker Machine on a Mac or Windows, use 
docker-machine ip 
>>192.168.99.100
to get the IP address of your Docker host. 
Then, open http://MACHINE_VM_IP:5000 in a browser.