Docker in Memory is - in general brocken - Clarification of documentation is needed

[egandro]

Describe the bug
Referencing this part of the documentation

conductor/docker/server/README.md

Line 9 in a32acec

`docker build -f docker/server/Dockerfile -t conductor:server .`

docker build -f docker/server/Dockerfile -t conductor:server .

Details
Conductor version: main

To Reproduce
Steps to reproduce the behavior:

git clone https://github.com/Netflix/conductor
cd conductor
docker build -f docker/server/Dockerfile -t conductor:server 

Expected behavior
At last the in memory database should work - not some useless java exceptions.

Additional context
Works with the community edition.

• Fix the documentation and tell everybody "in memory is only available in the community edition".
• Fix the documentation and tell everybody conductor requires Redis.