Configuring ngnix to proxy request toward the Node server

Change-Id: If9ae80afeef276886f87602d6d973bb30ac19dce
diff --git a/conf/app/app.config.production.ts b/conf/app/app.config.production.ts
index 2357f77..361db95 100644
--- a/conf/app/app.config.production.ts
+++ b/conf/app/app.config.production.ts
@@ -6,6 +6,6 @@
 }
 
 export const AppConfig: IAppConfig = {
-    apiEndpoint: 'http://xos-rest-gw:3000/api',
-    websocketClient: 'http://xos-rest-gw:3000'
+    apiEndpoint: '/api',
+    websocketClient: ''
 };