diff --git a/.gitignore b/.gitignore
index 6f7c37e..85f4726 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,4 +8,8 @@
 /var/
 /vendor/
 ###< symfony/framework-bundle ###
-.idea
\ No newline at end of file
+.idea
+###> php-cs-fixer/shim ###
+/.php-cs-fixer.php
+/.php-cs-fixer.cache
+###< php-cs-fixer/shim ###
diff --git a/.php-cs-fixer.dist.php b/.php-cs-fixer.dist.php
new file mode 100644
index 0000000..3788194
--- /dev/null
+++ b/.php-cs-fixer.dist.php
@@ -0,0 +1,13 @@
+<?php
+
+$finder = (new PhpCsFixer\Finder())
+    ->in(__DIR__)
+    ->exclude('var')
+;
+
+return (new PhpCsFixer\Config())
+    ->setRules([
+        '@Symfony' => true,
+    ])
+    ->setFinder($finder)
+;
diff --git a/composer.json b/composer.json
index 8207207..4fa43ba 100644
--- a/composer.json
+++ b/composer.json
@@ -7,6 +7,7 @@
         "php": ">=8.2",
         "ext-ctype": "*",
         "ext-iconv": "*",
+        "php-cs-fixer/shim": "^3.64",
         "symfony/console": "7.1.*",
         "symfony/dotenv": "7.1.*",
         "symfony/flex": "^2",
@@ -14,8 +15,6 @@
         "symfony/runtime": "7.1.*",
         "symfony/yaml": "7.1.*"
     },
-    "require-dev": {
-    },
     "config": {
         "allow-plugins": {
             "php-http/discovery": true,
diff --git a/composer.lock b/composer.lock
index 2f23563..149bf13 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,8 +4,60 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "50f9c0973acafa44bb359f58b30b8e58",
+    "content-hash": "6f438d4470aff3ca26ab7be26faa0b50",
     "packages": [
+        {
+            "name": "php-cs-fixer/shim",
+            "version": "v3.64.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/PHP-CS-Fixer/shim.git",
+                "reference": "81ccfd24baf3a10810dab1152c403981a790b837"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/PHP-CS-Fixer/shim/zipball/81ccfd24baf3a10810dab1152c403981a790b837",
+                "reference": "81ccfd24baf3a10810dab1152c403981a790b837",
+                "shasum": ""
+            },
+            "require": {
+                "ext-json": "*",
+                "ext-tokenizer": "*",
+                "php": "^7.4 || ^8.0"
+            },
+            "replace": {
+                "friendsofphp/php-cs-fixer": "self.version"
+            },
+            "suggest": {
+                "ext-dom": "For handling output formats in XML",
+                "ext-mbstring": "For handling non-UTF8 characters."
+            },
+            "bin": [
+                "php-cs-fixer",
+                "php-cs-fixer.phar"
+            ],
+            "type": "application",
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Fabien Potencier",
+                    "email": "fabien@symfony.com"
+                },
+                {
+                    "name": "Dariusz Rumiński",
+                    "email": "dariusz.ruminski@gmail.com"
+                }
+            ],
+            "description": "A tool to automatically fix PHP code style",
+            "support": {
+                "issues": "https://github.com/PHP-CS-Fixer/shim/issues",
+                "source": "https://github.com/PHP-CS-Fixer/shim/tree/v3.64.0"
+            },
+            "time": "2024-08-30T23:10:11+00:00"
+        },
         {
             "name": "psr/cache",
             "version": "3.0.0",
diff --git a/src/Controller/MainController.php b/src/Controller/MainController.php
new file mode 100644
index 0000000..37e4086
--- /dev/null
+++ b/src/Controller/MainController.php
@@ -0,0 +1,15 @@
+<?php
+
+namespace App\Controller;
+
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\Routing\Attribute\Route;
+
+class MainController
+{
+    #[Route('/', name: 'main')]
+    public function homepage(): Response
+    {
+        return new Response('Hello World!');
+    }
+}
diff --git a/symfony.lock b/symfony.lock
index 5267cab..820fb38 100644
--- a/symfony.lock
+++ b/symfony.lock
@@ -1,4 +1,16 @@
 {
+    "php-cs-fixer/shim": {
+        "version": "3.64",
+        "recipe": {
+            "repo": "github.com/symfony/recipes",
+            "branch": "main",
+            "version": "3.0",
+            "ref": "16422bf8eac6c3be42afe07d37e2abc89d2bdf6b"
+        },
+        "files": [
+            ".php-cs-fixer.dist.php"
+        ]
+    },
     "symfony/console": {
         "version": "7.1",
         "recipe": {