itsthenetwork/nfs-server-alpine:12でデプロイしたnfs serverに対してnfs-subdir-external-provisionerが起動できない

[n-guitar]

Describe the bug
A clear and concise description of what the bug is.
にて
itsthenetwork/nfs-server-alpine:12でデプロイしたnfs serverに対してnfs-subdir-external-provisionerが起動できない

To Reproduce
Steps to reproduce the behavior:
1.

docker run -d --name nfs --privileged -v /tmp:/nfsshare -e SHARED_DIRECTORY=/nfsshare --network=k3s_in_doccker_default itsthenetwork/nfs-server-alpine:12
docker exec -it nfs /bin/sh -c "mkdir /nfsshare/storageclass"

helm install nfs-subdir-external-provisioner nfs-subdir-external-provisioner/nfs-subdir-external-provisioner --set nfs.server=XXXXX --set nfs.path=/nfsshare/storageclass

4. Check

k describe po nfs-subdir-external-provisioner-64c57f87b9-8z8sr
Name:           nfs-subdir-external-provisioner-64c57f87b9-8z8sr
Namespace:      default
Priority:       0
Node:           k3s-worker2/172.21.0.2
Start Time:     Thu, 14 Jul 2022 09:19:00 +0900
Labels:         app=nfs-subdir-external-provisioner
                pod-template-hash=64c57f87b9
                release=nfs-subdir-external-provisioner
Annotations:    <none>
Status:         Pending
IP:             
IPs:            <none>
Controlled By:  ReplicaSet/nfs-subdir-external-provisioner-64c57f87b9
Containers:
  nfs-subdir-external-provisioner:
    Container ID:   
    Image:          k8s.gcr.io/sig-storage/nfs-subdir-external-provisioner:v4.0.2
    Image ID:       
    Port:           <none>
    Host Port:      <none>
    State:          Waiting
      Reason:       ContainerCreating
    Ready:          False
    Restart Count:  0
    Environment:
      PROVISIONER_NAME:  cluster.local/nfs-subdir-external-provisioner
      NFS_SERVER:        172.21.0.5
      NFS_PATH:          /nfsshare/storageclass
    Mounts:
      /persistentvolumes from nfs-subdir-external-provisioner-root (rw)
      /var/run/secrets/kubernetes.io/serviceaccount from kube-api-access-j9l99 (ro)
Conditions:
  Type              Status
  Initialized       True 
  Ready             False 
  ContainersReady   False 
  PodScheduled      True 
Volumes:
  nfs-subdir-external-provisioner-root:
    Type:      NFS (an NFS mount that lasts the lifetime of a pod)
    Server:    172.21.0.5
    Path:      /nfsshare/storageclass
    ReadOnly:  false
  kube-api-access-j9l99:
    Type:                    Projected (a volume that contains injected data from multiple sources)
    TokenExpirationSeconds:  3607
    ConfigMapName:           kube-root-ca.crt
    ConfigMapOptional:       <nil>
    DownwardAPI:             true
QoS Class:                   BestEffort
Node-Selectors:              <none>
Tolerations:                 node.kubernetes.io/not-ready:NoExecute op=Exists for 300s
                             node.kubernetes.io/unreachable:NoExecute op=Exists for 300s
Events:
  Type     Reason       Age                  From               Message
  ----     ------       ----                 ----               -------
  Normal   Scheduled    3m27s                default-scheduler  Successfully assigned default/nfs-subdir-external-provisioner-64c57f87b9-8z8sr to k3s-worker2
  Warning  FailedMount  84s                  kubelet            Unable to attach or mount volumes: unmounted volumes=[nfs-subdir-external-provisioner-root], unattached volumes=[nfs-subdir-external-provisioner-root kube-api-access-j9l99]: timed out waiting for the condition
  Warning  FailedMount  79s (x9 over 3m27s)  kubelet            MountVolume.SetUp failed for volume "nfs-subdir-external-provisioner-root" : mount failed: exit status 255
Mounting command: mount
Mounting arguments: -t nfs 172.21.0.5:/nfsshare/storageclass /var/lib/kubelet/pods/8d67e2d2-4075-43c8-a649-a2e5c72fe13e/volumes/kubernetes.io~nfs/nfs-subdir-external-provisioner-root
Output: mount: mounting 172.21.0.5:/nfsshare/storageclass on /var/lib/kubelet/pods/8d67e2d2-4075-43c8-a649-a2e5c72fe13e/volumes/kubernetes.io~nfs/nfs-subdir-external-provisioner-root failed: Not supported

Smartphone (please complete the following information):

• k3s https://github.com/n-guitar/k8s-bootcamp/blob/main/k3s_in_doccker/docker-compose.yaml

k get node -o wide
NAME          STATUS   ROLES                  AGE   VERSION         INTERNAL-IP   EXTERNAL-IP   OS-IMAGE   KERNEL-VERSION      CONTAINER-RUNTIME
k3s-worker1   Ready    <none>                 35m   v1.22.10+k3s1   172.21.0.3    <none>        K3s dev    5.10.104-linuxkit   containerd://1.5.13-k3s1
k3s-worker2   Ready    <none>                 35m   v1.22.10+k3s1   172.21.0.2    <none>        K3s dev    5.10.104-linuxkit   containerd://1.5.13-k3s1
k3s-master    Ready    control-plane,master   35m   v1.22.10+k3s1   172.21.0.4    <none>        K3s dev    5.10.104-linuxkit   containerd://1.5.13-k3s1

• nfs-subdir-external-provisioner
• https://github.com/kubernetes-sigs/nfs-subdir-external-provisioner

helm list
NAME                            NAMESPACE       REVISION        UPDATED                                 STATUS          CHART                                   APP VERSION
nfs-subdir-external-provisioner default         1               2022-07-14 09:18:59.814037 +0900 JST    deployed        nfs-subdir-external-provisioner-4.0.16  4.0.2