docs(readme): add helm chart reference to notes section

Author: pascaliske

README.md

@@ -29,6 +29,7 @@ ___
 * [Notes](#notes)
   * [Performance issues](#performance-issues)
   * [Use with Pi-hole](#use-with-pi-hole)
+  * [Use inside Kubernetes](#use-inside-kubernetes)
 * [Contributing](#contributing)
 * [License](#license)
 
@@ -122,6 +123,10 @@ In such cases, using `--net=host` should have limited impact on security.
 
 With Docker and this image, it's quite easy to use it with [Pi-hole](https://pi-hole.net/). Take a look at this simple [docker compose template](examples/pihole/docker-compose.yml) and you're ready to go.
 
+### Use inside Kubernetes
+
+If you want to install this container inside a Kubernetes cluster you can use the [community contributed helm chart](https://github.com/pascaliske/helm-charts/tree/master/charts/cloudflared).
+
 ## Upgrade
 
 To upgrade, pull the newer image and launch the container :