Trying to figure out the best way to set up a self hosted matrix server.

I have been trying to set this up for the past 2 days and I am losing my mind.

The issue I seem to be having is that synapse cannot find the necessary postgres information in the the database. I have been trying to setup a docker container for it but to no avail. The container just continues to restart. When I check docker logs it seems like it cannot find the database info it needs but its there. I deleted the sqlite3 info so it most certainly isn't still using that.

Is there possibly a casaos friendly version of matrix? Is there an easy to follow tutorial for docker matrix and duckdns? Any help would be appreciated.