installer: create namespaces with kube client
diff --git a/core/installer/cmd/welcome.go b/core/installer/cmd/welcome.go
index 3b834b0..6d2d7e0 100644
--- a/core/installer/cmd/welcome.go
+++ b/core/installer/cmd/welcome.go
@@ -63,9 +63,14 @@
 		InsecureSkipTLS: true,
 		Progress:        os.Stdout,
 	})
+	nsCreator, err := newNSCreator()
+	if err != nil {
+		return err
+	}
 	s := welcome.NewServer(
 		welcomeFlags.port,
 		installer.NewRepoIO(repo, auth.Signer),
+		nsCreator,
 	)
 	s.Start()
 	return nil