Ideally tests should not use volumes since everything should be built from scratch as the tests start and should be destroyed as the tests end, nothing should be saved.

https://github.com/metabrainz/listenbrainz-server/blob/master/docker/docker-compose.test.yml#L39

If we remove volumes, we should modify test.sh so that a build happens with every test to keep track of the most recent changes in the codebase.