Package the webapp in a docker nginx lightweight container

lib/main.dart

@@ -1,5 +1,6 @@
 import 'package:core/core.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter_dotenv/flutter_dotenv.dart';
 import 'package:flutter_localizations/flutter_localizations.dart';
 import 'package:get/get.dart';
 import 'package:tmail_ui_user/features/caching/config/hive_cache_config.dart';
@@ -14,6 +15,7 @@ void main() async {
     WidgetsFlutterBinding.ensureInitialized();
     await MainBindings().dependencies();
     await HiveCacheConfig().setUp();
+    await dotenv.load(fileName: 'env.file');
     runApp(TMailApp());
   });
 }