Add a delay to let the PostgreSQL docket container spin up.

api/Makefile

@@ -11,6 +11,7 @@ postgres.container.id:
 
 start-postgres: postgres.container.id
 	docker start $(PGSQL_CONTAINER_ID)
+	sleep 1
 	db_migrate up -c database-local.json
 
 stop-postgres: postgres.container.id