diff --git a/public/service-hydra-build.nix b/public/service-hydra-build.nix
index 98a6453..5c75d34 100644
--- a/public/service-hydra-build.nix
+++ b/public/service-hydra-build.nix
@@ -15,15 +15,21 @@ mkIf cfg.hydra-builder {
 
   # Services
 
-
+  ## Services de virtualisation utilisé pour les tests hydra
+  virtualisation.docker.enable = true;
+  virtualisation.libvirtd.enable = true;
+  #virtualisation.virtualbox.guest.enable = true;
   virtualisation.virtualbox.host.enable = true;
+  virtualisation.virtualbox.host.headless = true;
+
+  ## Ménage automatique tous les jours
   nix.gc.automatic = true;
 
   users.users."hydrabld" = {
     description = "Execution des jobs hydra";
     group = "nixbld";
     extraGroups = [ "nixbld" ];
-    isNormalUser = true;
+    isNormalUser = true;  # devrait être à false: TODO débugger la conf ssh & users pour que ça marche en user système
 
     openssh.authorizedKeys.keys = [
       "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIGYpjcWJCf8dXpv2LmoIaNVbwZXEC50QUU6Az+lqeD89 hydra radx"