Docker image - where are data source connection logs

I’m running the ‘latest’ - 884d0dad73c2 version of the docker image

I’m trying to create an external data source - but I get a generic error in the gui and a link to here - Dremio

which of these logs show the reason for the jdbc failure and any responses from the data source host? and where are they located?

I can only see the server.out log in the running docker img in the /var/log/dremio/ dir, and that just has the startup params