Using MariaDB on NetPi

[Armin@netPI]

managed to get a mariaDB working in a container on the rpi and netpi using the netpi-raspbian image. I can write to this data base and it is syncing with azure cloud.

The python script is using websockets to call information from other devices; specifically on ports 2053 and 2052. I can run this python script on the host and it will save to the data base on the docker container.
When I run the script on the docker container it never receives any websockets. So in turn no data is received. I have mapped the ports when starting the container using

Let me ask you what you are running on the netPI/rpi right now?

mariadb-server image in one container A.) and a second container B.) running the python script needing access to container A.) . Is my understanding correct?