Kubernetes YAML to deploy IPSec VPN server (statefulset)

ipsec-vpn-server.yaml

apiVersion: apps/v1beta2
kind: StatefulSet
metadata:
  name: vpn
spec:
  selector:
    matchLabels:
      app: vpn
  serviceName: vpn
  replicas: 1
  template:
    metadata:
      labels:
        app: vpn
    spec:
     containers:
       - name: vpn
         image: hwdsl2/ipsec-vpn-server
         imagePullPolicy: Always
         securityContext:
           privileged: true
         ports:
           - containerPort: 500
             hostPort: 500
             name: vpn-isakmp
             protocol: UDP
           - containerPort: 4500
             hostPort: 4500
             name: vpn-ike
             protocol: UDP
         env:
           - name: "VPN_IPSEC_PSK"
             value: "presharedkey"
           - name: "VPN_USER"
             value: "user"
           - name: "VPN_PASSWORD"
             value: "password"