AWS EB deployment - where is my app?

I packaged my Scala/LiftWeb app with the sbt one-jar plugin into a single executable jar file and packed it up with Docker, exposing the embedded Jetty's port in the Dockerfile.

It runs fine locally on Docker and appearently deploys clean on AWS EB using the CLI deployment tools. On the received EB URL however, all I see is the congrats page saying "Your Docker Container is now running in Elastic Beanstalk on your own dedicated environment in the AWS Cloud.".

So, where is my app? Do I miss any steps making my app publicly available on my EB instance?