chore: Drop and create test database automatically between runs

docs: Update README to specify using make to run tests

Makefile

@@ -9,10 +9,16 @@ build:
 
 test:
 	docker-compose up -d redis postgres s3
+	yarn sequelize db:drop --env=test
+	yarn sequelize db:create --env=test
+	yarn sequelize db:migrate --env=test
 	yarn test
 
 watch:
 	docker-compose up -d redis postgres s3
+	yarn sequelize db:drop --env=test
+	yarn sequelize db:create --env=test
+	yarn sequelize db:migrate --env=test
 	yarn test:watch
 
 destroy:

README.md

@@ -139,8 +139,16 @@ To add new tests, write your tests with [Jest](https://facebook.github.io/jest/)
 
 ```shell
 # To run all tests
-yarn test
+make test
 
+# To run backend tests in watch mode
+make watch
+```
+
+Once the test database is created with  `make test` you may individually run
+frontend and backend tests directly.
+
+```shell
 # To run backend tests
 yarn test:server