Fixed docker errors and improved error logging..

core/Application.php

@@ -12,12 +12,30 @@ class Application
 
     public function __construct()
     {
+        // Configure error reporting based on environment
+        $this->configureErrorReporting();
+        
         self::$router = new Router();
         self::$db = new Database();
         
         // Initialize error handler
         $this->errorHandler = new ErrorHandler();
     }
+    
+    private function configureErrorReporting()
+    {
+        $env = $_ENV['APP_ENV'] ?? 'development';
+        
+        if ($env === 'production') {
+            // In production, suppress deprecation warnings to prevent header issues
+            error_reporting(E_ALL & ~E_DEPRECATED & ~E_STRICT);
+            ini_set('display_errors', '0');
+        } else {
+            // In development, show all errors including deprecations
+            error_reporting(E_ALL);
+            ini_set('display_errors', '1');
+        }
+    }
 
     public function run()
     {