Outdated and wrong setup instruction.

[frasou]

I know this project is forked. But the description how to setup this package are wrong and outdated. Many information are left from original project. This is very frustrating.

Example:

docker exec -it samba /bin/ls /etc/samba/external ls: /etc/samba/external: No such file or directory

For example I am not able to determine which volumes should be set up to have persisted configuration.