Docker build improvement, fix findFTN(), fix address add for systems

app/Http/Controllers/SystemController.php

@@ -90,6 +90,7 @@ class SystemController extends Controller
 							// Check that a host doesnt already exist
 							->orWhere(function($query) use ($value) {
 								return $query->where('host_id',$value)
+									->where('node_id',0)
 									->where('point_id',0)
 									->where('role',DomainController::NODE_NC);
 							});