xos-core/templates/ws-deployment.yaml

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: xos-ws
  labels:
    app: xos-ws    
spec:
  replicas: 1
  template:
    metadata:
      labels:
        app: xos-ws
    spec:
      containers:
        - name: xos-ws
          image: {{ .Values.pull_docker_registry }}{{ .Values.images.xos_ws.repository }}:{{ .Values.images.xos_ws.tag }}
          command: ["npm", "start", "--",  "--config", "gateway-config.yml"]
          ports:
            - containerPort: 3000
              port: 3000
              protocol: TCP
          volumeMounts:
            - name: gateway-config
              mountPath: /var/www/src/config/gateway-config.yml
              subPath: config/gateway-config.yml
      volumes:
        - name: gateway-config
          configMap:
            name: xos-gateway 
            items: 
             - key: config
               path: config/gateway-config.yml