Update config setup with overrides for Docker

docker.config.json

@@ -1,23 +1,5 @@
 {
-    "port": 1337,
-    "security": {
-        "tokenLife" : 3600
-    },
     "mongoose": {
         "uri": "mongodb://mongo/apiDB"
-    },
-    "default": {
-        "api": {
-            "version" : "v1"
-        },
-        "user": {
-            "username": "myapi",
-            "password": "abc1234"
-        },
-        "client": {
-            "name": "Android API v1",
-            "clientId": "android",
-            "clientSecret": "SomeRandomCharsAndNumbers"
-        }
     }
 }

libs/config.js

@@ -1,13 +1,15 @@
 var nconf = require('nconf');
 
-var config = (process.env.ENV_IN === 'docker') ?
-    '/docker.config.json' :
-    '/config.json';
+nconf.argv().env();
 
-nconf.argv()
-	.env()
-	.file({
-		file: process.cwd() + config
-	});
+if (process.env.ENV_IN === 'docker') {
+    nconf.file('docker', {
+        file: process.cwd() + '/docker.config.json'
+    });
+}
 
-module.exports = nconf;
+nconf.file('defaults', {
+    file: process.cwd() + '/config.json'
+});
+
+module.exports = nconf;