I couldn't run the Docker image, it seems that the Java process running in docker image doesn't bind the port 3000. Also tried to deploy to Heroku but when I try to access the application via url, Heroku throws 503 error.
Curious. I run the docker image all the time and haven't had any issues with the port binding. What kind of system are you using? and what was your launch command?
Heroku sometimes times out if the application takes too long to start. Could you try again and see if it works? We're working on making Heroku deploys more robust.
It seems that the Docker issue is memory overflow in container. I tried to run the docker image in a 512mb Digitalocean droplet that already runs several processes that also consume memory so I think it's expected considering Metabase runs on JVM.
Are you on virtualbox? Sounds like a port binding issue. If you open an issue at github.com/metabase/metabase or http://discourse.metabase.com/ we'll try to debug exactly what's happening.
