Simplify installer script

Is your feature request related to a problem? Please describe. The installer script is quite complicated as it handles multiple installation mechanisms:

• default installer
• full (debug) installation which is deprecated
• list dependencies which is deprecated
• docker base image builder

Describe the solution you'd like rip of the deprecated areas and split the installer into two components

• default installer (very minimalistic and easy to maintain)
• docker base image builder which is only needed to build a EMBA docker image