link db from web container

docker-compose.yml

@@ -3,9 +3,9 @@ version: '2'
 services:
   db:
     image: mongo:3.2
-    command: ['bash', '-c', 'mongod --storageEngine wiredTiger'] #['mongod', '--storageEngine', 'wiredTiger']
+#    command: ['bash', '-c', 'mongod --storageEngine wiredTiger'] #['mongod', '--storageEngine', 'wiredTiger']
     volumes:
-    - mongo-data-wt:/data/db
+    - ./mongo-data-wt:/data/db
     #- /tmp/etc:/etc
     networks:
       - back-tier
@@ -19,6 +19,8 @@ services:
       - "35729:35729"
     networks:
       - back-tier
+    links:
+      - db
 volumes:
   mongo-data-wt:
     driver: local