Get ready for composer 2

.gitignore

-vendor
-composer.lock
+/vendor/
+/.env
+/composer.lock

Traefik.php

@@ -38,7 +38,6 @@ class Traefik {
     $traefikPath = $_SERVER['HOME'] . '/.traefik';
     $traefikFile = $traefikPath . '/docker-compose.yml';
 
-    /* @var FileSystem $fs */
     $fs = new Filesystem();
     if ($fs->exists($traefikFile)) {
       $traefik = Yaml::parse(file_get_contents($traefikFile));

composer.json

@@ -29,8 +29,8 @@
         "symfony/yaml": "^3.4||^4.4||^5.0"
     },
     "require-dev": {
-        "composer/composer": "^1.5.0",
-        "phpunit/phpunit": "^4.8.0"
+        "composer/composer": "^1||^2",
+        "phpunit/phpunit": "^8.4"
     },
     "minimum-stability": "dev",
     "prefer-stable": true,