Note binder_*request are relative (no leading /)
@@ -263,6 +263,7 @@ class BuildHandler(BaseHandler):
host=self.request.host,
base_url=self.settings['base_url'],
)
+ # These are relative URLs so do not have a leading /
self.binder_request = 'v2/{provider}/{spec}'.format(
provider=provider_prefix,
spec=spec,
