Really add the external volume to mysql.

templates/bluecloud-ufish-db-docker-compose.yml.j2

@@ -18,6 +18,9 @@ services:
     image: mysql:latest
     networks:
       - {{ bc_ufish_docker_network }}
+    volumes:
+      - {{ bc_ufish_db_volume }}:/var/lib/mysql
+
     environment:
       MYSQL_ROOT_PASSWORD: {{ bc_ufish_mysql_root_password }}
       MYSQL_PORT: 3306