add docker group to user in enable docker service module

modules/docker/enable-service.nix

@@ -15,7 +15,7 @@
     #    experimental = true;
     #  };
   };
-
+  users.users.${vars.primaryUser}.extraGroups = [ "docker" ];
   environment.systemPackages = with pkgs; [
     docker-compose
     docker-buildx