--prefer-stable and --sort-packages don't exist during composer install

Author: clemzarch

src/PHP/ComposerInstall.php

@@ -13,7 +13,7 @@ public function __toString(): string
         return (string) new Dockerfile\Run(
             <<<'RUN'
                 set -ex \
-                    && composer install --prefer-dist --no-progress --prefer-stable --sort-packages --optimize-autoloader --no-dev
+                    && composer install --prefer-dist --no-progress --optimize-autoloader --no-dev
                 RUN
         );
     }