ENV variables support:

.env.example

+KUS_GENERATOR_BACKEND=https://api.new.local.vkusvill.testin.ru
+KUS_GENERATOR_PORT=4001
\ No newline at end of file

api.js

+var parsed =  require('dotenv').config();
+const fs = require( 'fs' );
+if(parsed.error){
+  parsed = require('dotenv').parse(fs.readFileSync('./.env.example', 'utf-8'));
+  if(!parsed.error){
+    for (const k in parsed) {
+      process.env[k] = parsed[k].split('|')[0]
+    }
+  }
+}
+
+
 var env = process.env;
 
 const APP_HOST = env.APP_HOST || "127.0.0.1";
-const APP_PORT = env.APP_PORT || 4001;
+const APP_PORT = env.KUS_GENERATOR_PORT || 4001;
 const DB_PATH = env.DB_PATH || "./db/users.json";
 
 const data = require("./db.js");
@@ -14,7 +26,6 @@ const app = App(),
 
 
 
-const fs = require( 'fs' );
 
 const tpls = {
   index: fs.readFileSync('./index.html')+''

example.env

-KUS_DATA_DIR=../../
\ No newline at end of file

src/api/generateRandom.js

@@ -104,7 +104,13 @@ const readCSV = async function(scope) {
       });
   });
 };
-
+let BACKEND = process.env.KUS_GENERATOR_BACKEND;
+if(!BACKEND)
+  throw new Error('No backend specified');
+let urlJoin = function(){
+  let uri = [].slice.call(arguments).join('/');
+  return uri.substr(0,9)+uri.substr(9).replace(/\/+/g, '/');
+};
 let afterLoaded = async function(infoHash) {
   ctx._r();
   return;// everything imported
@@ -206,6 +212,7 @@ let afterLoaded = async function(infoHash) {
       },
       index: 'qID'
     } );
+
 let inc = 1;
     const A = await readCSV( {
       fileName: path.join( base, moreElement.a ),
@@ -242,7 +249,7 @@ let inc = 1;
       let saved = await new Promise((r,j)=>{
         var options = {
           'method': 'POST',
-          'url': 'https://api.new.local.vkusvill.testin.ru/api/admin/question/',
+          'url': urlJoin(BACKEND,'/api/admin/question/'),
           'headers': {
             'Content-Type': 'application/json'
           },
@@ -264,7 +271,7 @@ let inc = 1;
         let answerResponse = await new Promise((r,j)=>{
           var options = {
             'method': 'POST',
-            'url': 'https://api.new.local.vkusvill.testin.ru/api/admin/answer/',
+            'url': urlJoin(BACKEND,'/api/admin/answer/'),
             'headers': {
               'Content-Type': 'application/json'
             },
@@ -314,14 +321,14 @@ module.exports = {
   },
   '/api/database/update': {
     method: 'GET',
-    summary: 'Reload data from https://api.new.local.vkusvill.testin.ru/api/admin/category/',
+    summary: 'Reload category, tags and questions from '+BACKEND,
     options: {},
     fn: firstRequest = async function() {
 
       var request = require('request');//function(o, fn){fn(false, {body:JSON.stringify(require('../../data/mocked.json'))})};//
       var options = {
         'method': 'GET',
-        'url': 'https://api.new.local.vkusvill.testin.ru/api/admin/category/',
+        'url': urlJoin(BACKEND,'/api/admin/category/'),
         'headers': {}
       };
       request(options, function (error, response){
@@ -332,7 +339,7 @@ module.exports = {
 
         var options = {
           'method': 'GET',
-          'url': 'https://api.new.local.vkusvill.testin.ru/api/admin/tag/',
+          'url': urlJoin(BACKEND,'/api/admin/tag/'),
           'headers': {}
         };
         request( options, function( error, response ){
@@ -341,7 +348,7 @@ module.exports = {
           console.log('Request: tag loaded');
           var options = {
             'method': 'GET',
-            'url': 'https://api.new.local.vkusvill.testin.ru/api/admin/question/',
+            'url': urlJoin(BACKEND,'/api/admin/question/'),
             'headers': {}
           };
           request( options, function( error, response ){