diff --git a/nix/docker/default.nix b/nix/docker/default.nix
index 5d76b5d9b..68de295db 100644
--- a/nix/docker/default.nix
+++ b/nix/docker/default.nix
@@ -134,6 +134,12 @@ in
       minio-client
       xz
     ];
+    
+    runAsRoot = ''
+      #!${final.stdenv.shell}
+
+      ${final.coreutils}/bin/install -v -m 0777 -d /var/tmp
+    '';
   };
 } // mapAttrs (_name: mkUniworxDocker) {
   uniworxDemoDocker = { isDemo = true; };