I just installed an Apache-Superset platform on a Ubuntu 20.04 machine thanks to docker-compose. the platform works fine, I am able to create new db connections, queries, charts and so on, but I am wondering where are the metadata stored? I read lots of documentation on this subject and all tell that this information is stored in a SQLLite database under ~/.superset folder. I searched the whole superset tree and the same for my home directory without finding any .superset directory, nor superset.db database. I also read that this could be stored in a Postgresql instance, but there is no clue of such a database on my system. My concern is I will not be able to backup this database if I am not able to connect to it. Nor would I be able to migrate the metadata to another DB.
Could anybody help me on this topic?
Thank you in advance for your answers