deployment-app.yml

apiVersion: apps/v1
kind: Deployment
metadata:
  # Unique key of the Deployment instance
  name: my-node-app
spec:
  # 2 Pods should exist at all times.
  replicas: 2
  selector:
    matchLabels:
      app: node-app
  template:
    metadata:
      labels:
        # Apply this label to pods and default
        # the Deployment label selector to this value
        app: node-app
    spec:
      containers:
        - name: node-app
          # Run this image
          image: YOUR_IMAGE_NAME