added helm

Docker.md

@@ -107,6 +107,11 @@ Execute the following commands:
 sudo docker pull linuxserver/radarr
 sudo systemctl restart docker-radarr
 ```
+# Using Helm
+The Radarr team does not currently maintain a helm chart directly
+
+A popular helm chart is maintained by the guys over at [k8s@home](https://github.com/k8s-at-home/charts).
+Installation, upgrade, and removal docs are all on the [artifacthub.io page](https://artifacthub.io/packages/helm/k8s-at-home/radarr)
 
 # Using Ansible
 Ansible provides a simple module to manage docker containers.  Here's a simple task that can get Radarr running.