Downgrade to 7.10.1 due to dependency issues

Dockerfile

@@ -1,4 +1,4 @@
-FROM node:8.1.4
+FROM node:7.10.1
 
 # Create app directory
 RUN mkdir -p /usr/src/app

circle.yml

@@ -1,6 +1,6 @@
 machine:
   node:
-    version: 8.1.4
+    version: 7.10
   services:
     - docker
     - redis

package.json

@@ -214,6 +214,6 @@
     "webpack": "^2.3.1"
   },
   "engines": {
-    "node": "^8.1.4"
+    "node": "^7.10.1"
   }
 }