Enable puppet in Foreman container

Problem: Cannot add puppet feature from smart proxy

Expected outcome: Puppet features to be recognised from smart proxy

Foreman and Proxy versions: 1.3.1

Distribution and version: Container

Other relevant data:
I’m using the Foreman container from quay.io. I run the container, and build the DB but when I go to add the smart proxy, the puppet feature is not recognised. I’ve added the foreman_puppet and puppet gems but I can’t see the Puppet header under the Configure menu. I think something needs to be enabled but I’m struggling to find out what. Any help appreciated!