$ helm lint scripts/install/kubernetes/helm-chart
$ helm template -n kore kore-board scripts/install/kubernetes/helm-chart \
--set frontend.service.type=NodePort \
--set frontend.service.nodePort=30080
$ kubectl create ns kore
$ helm template --debug -n kore kore-board scripts/install/kubernetes/helm-chart \
--set frontend.service.type=NodePort \
--set frontend.service.nodePort=30080 \
| kubectl apply -n kore -f -
$ helm install --dry-run -n kore kore-board scripts/install/kubernetes/helm-chart \
--set frontend.service.type=NodePort \
--set frontend.service.nodePort=30080
$ helm package scripts/install/kubernetes/helm-chart -d scripts/install/kubernetes # packaging (tgz file 생성)
$ helm repo index scripts/install/kubernetes # index.yaml 파일 생성/수정