diff --git a/src/xrow/eZCluster/Resources/environment.php b/src/xrow/eZCluster/Resources/environment.php
index 59de104..18a09da 100644
--- a/src/xrow/eZCluster/Resources/environment.php
+++ b/src/xrow/eZCluster/Resources/environment.php
@@ -475,9 +475,12 @@ public function setup()
             $fs->remove( $this->dir . ".new" );
         }
 
-        # Clear composer cache to save some space when building a Docker image
+        # Clear composer and npm cache to save some space when building a Docker image
         if(file_exists("/.dockerenv")) {
-            $this->run("composer clear-cache");
+            if(file_exists("/usr/bin/npm")) {
+                $this->run("npm cache clear", $this->parameters);
+            }
+            $this->run("composer clear-cache", $this->parameters);
         }
     }