Moved DB provisioning to the provision script

This alleviates issues that occur when the DB-dependent services start before the MySQL container has time to run the entrypoint script.

ECOM-6563

docker-compose.yml

@@ -41,7 +41,6 @@ services:
       - "3306:3306"
     volumes:
       - ./.dev/volumes/mysql:/var/lib/mysql
-      - ./.dev/sql:/docker-entrypoint-initdb.d
 
   # edX services
   credentials:

provision.sh

@@ -3,6 +3,9 @@
 # Ensure the containers are started
 docker-compose up -d
 
+# Create the databases and users
+docker exec -i edx.devstack.mysql mysql -uroot < provision.sql
+
 # Create superusers that can access the services without the need for single sign-on
 # NOTE: If the users already exist, errors will be raised (in the Django shell), but execution of this provisioning
 # script will continue.