feature request :) ability to destroy db

[MortenHusted]

Description of problem

As per discussed in dokku forum on slack we're looking into cloning our "master"/staging database so that we can have a bit better database integrity.

In the the ci-predeploy-script we can add logic to clone the master database and link the new review-app to this cloned version, but we don't have an automated solution to destroying the database on destruction of the review-app

would that be possible to implement?