Hey @Hlombard,
You would first need to make sure the database is exposed in your container and that remote users can connect.
I would test by doing a local connection first using a database tool, the host would just be the host of the container but would likely need to be the IP address.
Where this will get really interesting is if you are trying to use the cloud version of PowerBI as you would need to open some firewall ports to allow the connection in and with the wrong configuration it could end up being a security risk.
One thing you could do is use a cloud hosted database then have PowerBI and Baserow talk to that, what I would do though is use the Web connector option in PowerBI and pull data from the Baserow API that might be enough for what you are planning to do.