switch to env to allow this to function in a pipenv
diff --git a/bin/buildsite.py b/bin/buildsite.py
index 517fcd1..9762968 100755
--- a/bin/buildsite.py
+++ b/bin/buildsite.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python3
+#!/usr/bin/env python3
 #
 # To run this in dev/test, then LIBCMARKDIR must be defined in the
 # environment.