Hi @Krogsager,
there is also documentation how to use the official docker image without using the ansible script 
Please see the docs in this section: https://rasa.com/docs/rasa-x/deploy/#manual-installation .
I nearly lost my mind today. Setting the env var
LOCAL_MODE=falsebroke rasa.
Oh dear 
Sorry for the hard time!
Rasa X in server mode uses postgresql as a database since sqlite is not suited for a production setup. In your docker image you have to install libpq-dev and you should install rasa with pip install rasa-x[sql] --extra-index-url https://pypi.rasa.com/simple (or simply do pip install psycopg2~=2.8).