apiVersion: apps/v1
kind: Deployment
metadata:
  name: web
spec:
  replicas: 3
  selector:
    matchLabels:
      app: web
  strategy:
    type: RollingUpdate
    rollingUpdate:
      maxUnavailable: 0
      maxSurge: 1
  template:
    metadata:
      labels:
        app: web
    spec: 
      initContainers:
      - name: generate-index-html
        image: busybox:1.31.0
        command: ['sh', '-c', 'wget -O- https://tinyurl.com/otus-k8s-intro | sh']
        volumeMounts:
        - name: app
          mountPath: /app
      volumes:
      - name: app
        emptyDir: {}
      - name: web-drozd
      containers:
      - name: web
        image: drozdnikita/drozd_web_app:1.0.0
        livenessProbe:
          tcpSocket: { port: 8000 }
        readinessProbe:
          httpGet:
            path: /index.html
            port: 8000
        volumeMounts:
        - name: app
          mountPath: /app