$ kubectl apply -f crd.yaml
customresourcedefinition.apiextensions.k8s.io/hellos.hello.example.com created
$ kubectl apply -f deploy.yaml
namespace/hello unchanged
serviceaccount/hello-account unchanged
clusterrole.rbac.authorization.k8s.io/hello-role unchanged
clusterrolebinding.rbac.authorization.k8s.io/hello-binding unchanged
deployment.apps/hello-populator unchanged
error: resource mapping not found for name: "hello-populator" namespace: "" from "deploy.yaml": no matches for kind "VolumePopulator" in version "populator.storage.k8s.io/v1beta1"
ensure CRDs are installed first
Could you include more compete documentation about every step you need to do to actually build and deploy the example?