Try Emy Community storage with Docker.
docker run -d -v /persistent-dir:/app/data -p 3399:3399 -p 3340:3340 addictedcs/soundfingerprinting.emy:latest
This will download and start a new container mapping
/persisten-dir from your local file system inside the container, enabling you to store fingerprints on a persistent volume.
You can remove
-v parameter entirely if you don't want to map volumes to your local drive.
Emy provides a backoffice interface that you can access on port
Emy Community is free for non-commercial use.