chore: Cheaper file check first (#8252)

src/ToolInfo.php

@@ -104,7 +104,7 @@ final class ToolInfo implements ToolInfoInterface
      */
     public function isRunInsideDocker(): bool
     {
-        return is_file('/.dockerenv') && str_starts_with(__FILE__, '/fixer/');
+        return str_starts_with(__FILE__, '/fixer/') && is_file('/.dockerenv');
     }
 
     public function getPharDownloadUri(string $version): string