test-postgres circleci based build that sets up a Postgres database, and runs pgTAP database unit tests Note: the dependencies should be baked into a custom circleci base image to shave almost 1m off build time. Testing Postgres Objects https://medium.com/engineering-on-the-incline/unit-testing-postgres-with-pgtap-af09ec42795 https://pgtap.org/pg_prove.html