API_URL - manage value from ENV (optional)

Author: app-generator

env.sample

@@ -0,0 +1 @@
+REACT_APP_BACKEND_SERVER='https://YOUR_API_URL/';

src/config/constant.js

@@ -1,7 +1,14 @@
+let BACKEND_SERVER = null;
+if (process.env.REACT_APP_BACKEND_SERVER) {
+  BACKEND_SERVER = process.env.REACT_APP_BACKEND_SERVER;
+} else {
+  BACKEND_SERVER = "http://localhost:5000/api/";
+}
+
 export const BASENAME = ''; // don't add '/' at end off BASENAME
 export const BASE_URL = '/app/dashboard/default';
 export const BASE_TITLE = ' | React Datta Able ';
-export const API_SERVER = 'http://localhost:5000/api/';
+export const API_SERVER = BACKEND_SERVER;
 
 export const CONFIG = {
     layout: 'vertical', // disable on free version