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Appears that I am mistaken and overlooked the fact that this repo only involved the RKE2 deployment and does not appear to include any provisioning for the Rancher server.

you can deploy Rancher in a Docker container (https://ranchermanager.docs.rancher.com/pages-for-subheaders/rancher-on-a-single-node-with-docker) and then import the RKE2 cluster in Rancher using Kubeconfig

Thanks for the option, but I'm wanting to run the Rancher server within the RKE2 cluster.