Chef-run fails creating local policyfile

Hello,
I'm trying to ad-hoc recipes on target nodes in our network using chef-run.
Its failing trying to connect to

ERROR: Error connecting to https://supermarket.chef.io/universe

But it shouldn't connect (because it's not allowed) and to that end I set an attribute in config.rb pointing to our artifactory site, but to no avail

knife[:supermarket_site] = "https://servername.domainname/artifactory/api/chef/chef-artifactory"
  • Where is the chef-run taking its config from?
  • How can I prohibit it searching in supermarket.chef.io?

Thanks