diff --git a/containers/jobsync/default.nix b/containers/jobsync/default.nix
index 855b962..07360e6 100644
--- a/containers/jobsync/default.nix
+++ b/containers/jobsync/default.nix
@@ -113,6 +113,11 @@ pkgs.dockerTools.buildLayeredImage {
     pkgs.coreutils
   ];
 
+  # Create writable directories that don't exist in nix containers
+  extraCommands = ''
+    mkdir -p tmp data
+  '';
+
   config = {
     Entrypoint = [ "${entrypoint}" ];
     WorkingDir = "${jobsync}/app";