learning CRD
from this awesome book
modified point:
- my k8s is arm64, so all the images have been used will be all arm64
- kube-rbac-proxy
- base image distroless
- myself controller
- since I don't have docker, so I use podman instead
- since I don't install whole kubebuilder into /usr/bin/kubebuilder
- so the test will failed due to it cannot find etcd under that folder
- so I skip the test step while build the image