apiVersion: apps/v1
kind: Deployment
metadata:
  name: flask-app
  namespace: webapp-namespace
spec:
  replicas: 1
  selector:
    matchLabels:
      app: flask
  template:
    metadata:
      labels:
        app: flask
    spec:
      containers:
      - name: flask
        image: flask-app:latest
        imagePullPolicy: Never
        ports:
        - containerPort: 8000
        env:
        - name: POSTGRES_HOST
          value: postgres
        - name: POSTGRES_DB
          value: mydatabase
        - name: POSTGRES_USER
          value: myuser
        - name: POSTGRES_PASSWORD
          value: mypassword
        - name: POSTGRES_PORT
          value: "5432"