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"