Added dotenv component to define env vars in local file

config/container.php

@@ -1,11 +1,19 @@
 <?php
-use Zend\Expressive\Application;
+use Dotenv\Dotenv;
 use Zend\ServiceManager\ServiceManager;
 
 chdir(dirname(__DIR__));
 
 require 'vendor/autoload.php';
 
+// If the Dotenv class exists, load env vars and enable errors
+if (class_exists(Dotenv::class)) {
+    error_reporting(E_ALL);
+    ini_set('display_errors', 1);
+    $dotenv = new Dotenv(__DIR__ . '/..');
+    $dotenv->load();
+}
+
 // Build container
 $config = require __DIR__ . '/config.php';
 $container = new ServiceManager($config['services']);