After a bit of architectural refactoring, I have the framework set up for a Docker cluster of MySQL nodes plus adjacent technologies like Proxysql and Hashicorp Vault. You can find that on Github here.

At the Triangle MySQL meetup last night, where I led a workshop on setting up a local Docker environment, I gathered a few other great ideas to add to the framework. The next container group added will be MariaDB AX (the column store for analytics).