diff --git a/default.nix b/default.nix
index 519b252..8e9288b 100644
--- a/default.nix
+++ b/default.nix
@@ -8,6 +8,9 @@ let
 in
   pkgs.dockerTools.buildImage {
     name = "superboum/nixtainer";
+    extraCommands = ''
+      mkdir -p tmp
+    '';
     copyToRoot = pkgs.buildEnv {
       name = "image-root";
       pathsToLink = [ "/bin" ];