'Here's a low brow example of how to avoid provisioning twice:' via http://stackoverflow.com/questions/14265807/avoid-reprovisioning-a-vagrant-vm-if-it-is-already-provisioned

Lowbrow Idempotence

PROVISIONED="/some-app-dir/PROVISIONED";

if [[ -f $PROVISIONED ]]; then
  echo "Skipping provisioning";
  exit;
else
  echo "Provisioning";
fi

#...do provisioning things

touch $PROVISIONED;