The MySQL connector module is building a custom Docker image based upon the `mysql/mysql-server` image maintained by the MySQL team, but we actually don't need to build a custom image. Instead, we can just reuse the `mysql/mysql-server` image and use volumes to mount our configuration file and scripts (like we do with the alternative MySQL server image `mysql`, maintained by the Docker team).

Similarly, the PostgreSQL connector (which is incomplete) is doing the same thing.