Create an Entity Relationship Diagram automatically for each release

There have been repeated requests for the creation of an Entity Relationship Diagram (ERD) of the GitLab.com database. We have been responding by sharing older ERDs or generating them upon request. Ideally, we would create them automatically with each release. Anecdotal comments have included adding a CI step to create the ERD. This issue is a placeholder for now to discuss how we could implement this automation.

The tool we used to manually generate is https://voormedia.github.io/rails-erd/install.html#generate Steps

Edited by Brie Carranza