I think the parent pretty clearly meant that you can spin up an instance of the same kind of database used in production. E.g., if you use MySQL in prod, you ca

I think the parent pretty clearly meant that you can spin up an instance of the same kind of database used in production. E.g., if you use MySQL in prod, you can spin up a local MySQL docker instance for tests rather than an in-memory not-MySQL option like H2 or SQLite.