diff -urNp -x '*.orig' util-vserver-0.30.216-pre3126.org/scripts/vserver-build util-vserver-0.30.216-pre3126/scripts/vserver-build
--- util-vserver-0.30.216-pre3126.org/scripts/vserver-build	2021-03-12 21:50:26.901033782 +0100
+++ util-vserver-0.30.216-pre3126/scripts/vserver-build	2021-03-12 21:50:26.994368768 +0100
@@ -143,6 +143,12 @@ test -n "$VSERVER_NAME" ||
 
 setup_setDefaults "$VSERVER_NAME"
 
+# Set sane umask to avoid nasty surprises like this:
+# umask 077 ; mkdir -p -m755 /tmp/a/b ; ls -ld /tmp/a /tmp/a/b
+#drwx------  3 baggins users 14 Aug 15 22:46 /tmp/a
+#drwxr-xr-x  2 baggins users  6 Aug 15 22:46 /tmp/a/b
+umask 022
+
 case x"$method" in
     (xlegacy)	exec $_VSERVER_LEGACY "$VSERVER_NAME" build "$@" ;;
     (xapt-rpm|xcopy|xskeleton|xdebootstrap|xyum|xrpm|xtemplate|xfai|xrsync|xclone|xurpmi|xpoldek)