machines: name: Fix blocky upstream timeout on boot

Although blocky starts after unbound, it still takes a few seconds for
it be ready - which blocky reliably races such that it errors out on
resolving it's upstream (aka. unbound).

Signed-off-by: Christoph Heiss <christoph@c8h4.io>

machines/name.nix

@@ -1,4 +1,4 @@
-{ lib, my, ... }:
+{ lib, my, pkgs, ... }:
 
 {
   imports =
@@ -31,5 +31,6 @@
   systemd.services.blocky = {
     requires = [ "unbound.service" ];
     after = [ "unbound.service" ];
+    preStart = "${pkgs.coreutils-full}/bin/sleep 10";
   };
 }