darkn3rd commented :
We have added functionality with last chart version 0.0.5 to support disabling ratel service for deployment, service, and recently added ingress support.
The default port is now 80 from 8000. There’s support for annotations as well, so you can add for example external load balancer annotations to customize LoadBalancer type.
Alternatively, you can use the new ingress feature. There are some example Helm chart values provided for popular ingress controllers.