We use the mongo docker image in our CI tests through GitHub actions. Not sure how helpful this is for you.
This PR needs to be merged
You can do the same change in connect-level if you want.
Also not all the features are fully implemented in leveldb so you wont be able to use it in a production environment.
Haha no. Even when LevelDB was first implemented, it was sketchy at best. I was hoping it'd pick up within the LevelDB community but I bet not even one of them have heard about NodeBB yet. Anyways, lesson learnt, next time I revisit the DBAL it will definitely be postgres, I think.