When I run the following command:

docker run -d -p 8080:8080 -p 50000:50000 -p 9090:9090 kubemq/kubemq-community:latest  

And then go to http://localhost:8080/dashboard

I see the dashboard, and I see a banner appear at the top every few seconds: "KubeMQ Server is Disconnected".

I was able to create a channel and send messages to the channel, so other things appear to work - but not the web interface :(