fix: Alter image to fit description

- Add inbound ports to the images
- make services optional
- Remove class names in adapters. This didn't really fit to the rest of
  the application. It did not become clear that *Listener could be
  postfixes for class names in java application. Therefore removed it
  here.
- Mor options than client on inbound side, to make the varity of cases
  visible

Ref: #39

Author: Fabian Baumeister