diff --git a/HttpServer/Shutdown.php b/HttpServer/Shutdown.php
index e70b53e0..93f2e37a 100644
--- a/HttpServer/Shutdown.php
+++ b/HttpServer/Shutdown.php
@@ -47,9 +47,8 @@ class Shutdown extends Component
 	public function shutdown(): void
 	{
 		clearstatcache(storage());
-		$output = shell_exec('ls -alh /.dockerenv');
-		var_dump($output);
-		if (!empty($output)) {
+		$output = shell_exec('[ -f /.dockerenv ] && echo yes || echo no');
+		if ($output === 'yes') {
 			return;
 		}
 
diff --git a/System/Snowflake.php b/System/Snowflake.php
index 2a8d2d56..d5e31706 100644
--- a/System/Snowflake.php
+++ b/System/Snowflake.php
@@ -243,8 +243,8 @@ class Snowflake
 	 */
 	public static function isDcoker(): bool
 	{
-		exec('ls -alh /.dockerenv', $output, $cod);
-		if ($cod === 0 && !empty($output)) {
+		exec('[ -f /.dockerenv ] && echo yes || echo no', $output, $cod);
+		if ($cod === 0 && $output === 'yes') {
 			return true;
 		}
 		return false;