update config reader

config/inc_projects_config.php

 <?php
 
 $aConfig = include('config_defaults.php');
-if (file_exists('config_custom.php')){
+if (file_exists(__DIR__.'/config_custom.php')){
     $aConfig = array_replace_recursive(
         $aConfig,
         include('config_custom.php')
@@ -13,8 +13,8 @@ if (file_exists('config_custom.php')){
 // ----------------------------------------------------------------------
 
 $aConfig = array_merge($aConfig, [
-    'appRootDir' => dirname(dirname(__FILE__)),
-    'configDir' => dirname(__FILE__),
+    'appRootDir' => dirname(__DIR__),
+    'configDir' => __DIR__,
     'dataDir' => $aConfig['workDir'] . '/data',    // to write data: ssh keys, projects, database
     'buildDir' => $aConfig['workDir'] . '/build',
     'buildDefaultsDir' => $aConfig['workDir'] . '/defaults',