myapp-deployment.yml

apiVersion: v1
kind: Service
metadata:
  name: myapp
  labels:
    app: myapp
spec:
  ports:
    - port: 80
  selector:
    app: myapp
    tier: frontend
  type: LoadBalancer
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: myapp
  labels:
    app: myapp
spec:
  selector:
    matchLabels:
      app: myapp
      tier: frontend
  strategy:
    type: Recreate
  template:
    metadata:
      labels:
        app: myapp
        tier: frontend
    spec:
      initContainers:
      - name: init-mysql
        image: busybox:1.28
        command: ['sh', '-c', "until nslookup mysql.$(cat /var/run/secrets/kubernetes.io/serviceaccount/namespace).svc.cluster.local; do echo waiting for myservice; sleep 2; done"]
      containers:
      - image: engrmnasirilyas716/jedwasmserver:latest
        name: myapp
        env:
        # - name: myapp_DB_HOST
        #   value: myapp-mysql
        - name: DATABASE_HOST
          value: mysql
        - name: DATABASE_PORT
          value: "3306"
        - name: DATABASE_PASSWORD
          valueFrom:
            secretKeyRef:
              name: mysql-pass
              key: password
        # - name: DATABASE_PASSWORD
        #   value: "your_database_password"
        - name: DATABASE_USER
          value: root
        - name: DATABASE_NAME
          value: imap
        ports:
        - containerPort: 80
          name: myapp