@greg3, glad you’re having a good experience with it! For SQLite DB within Ignition, I usually recommend targeting the DB to live under the projects/ folder. I’d steer away from mixing in with the internal config.idb. Within a kcollins/ignition container, you’d point it at something like /var/lib/ignition/data/projects/foo.db. See below:
This has the advantage of being preserved within a gateway backup, which is quite handy. It doesn’t, however, solve your desire to have it accessible from your host so you can connect to it directly with a separate tool. In order to do that, you’d have to bind-mount from your host into the container. So in addition to your other arguments to the docker command, you’d have something like -v /path/to/host/folder/example.db:/var/lib/ignition/data/projects/example.db.