apiVersion: apps/v1
kind: Deployment
metadata:
  name: web
  namespace: my-app
spec:
  replicas: 2
  selector:
    matchLabels:
      app: web
  template:
    metadata:
      labels:
        app: web
    spec:
      initContainers:
        - name: wait-for-postgres
          image: busybox
          command:
            - sh
            - -c
            - |
              until nc -z postgres 5432; do
                echo "Waiting for PostgreSQL..."
                sleep 2
              done
      containers:
        - name: web
          image: simple-web-app:latest
          imagePullPolicy: IfNotPresent
          ports:
            - containerPort: 5000
          env:
            - name: DB_HOST
              value: postgres
            - name: DB_PORT
              value: "5432"
            - name: DB_NAME
              value: postgres
            - name: DB_USER
              value: postgres
            - name: DB_PASS
              value: postgres
          readinessProbe:
            httpGet:
              path: /
              port: 5000
            initialDelaySeconds: 15
            periodSeconds: 10