- by default, the repository has debug enabled, meaning the get_debug_config is called
   overwriting the user config. That is not nice. Changed by default to false.
   In the future this can be a configuration flag?

 - when no config file is set, and debug is false, no configuration is loaded. This causes
   a lot of errors (namely key not founds). Given the repo includes a config file, added
   code to load it by default

 - when using the default config file, warn the user about that

Some details can be made better, but for now, it is working perfectly on my docker environment.
I am happy to provide further changes on this branch if you like.