diff --git a/modules/server/containers/builder.nix b/modules/server/containers/builder.nix
index 8a2b79a..d80f487 100644
--- a/modules/server/containers/builder.nix
+++ b/modules/server/containers/builder.nix
@@ -35,7 +35,7 @@ in {
   mkContainer = builder;
   mkData = { name, dir, vars?{} }: pkgs.runCommand name vars ''
     mkdir -p $out
-    cp -r ./data/${dir}/. $out/
+    cp -r ${./data + "/${dir}"}/. $out/
     find $out -type f | while read file; do
       ${lib.concatStringsSep "\n" (lib.mapAttrsToList (n: v: ''
         substituteInPlace "$file" --replace "@${n}@" "${toString v}"