Sampe echo app

sample-app.yaml

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: ingress-test
  annotations:
    kubernetes.io/ingress.class: nginx
    cert-manager.io/cluster-issuer: "letsencrypt-staging"
spec:
  rules:
    - host: www.example.com
      http:
        paths:
          - path: /
            pathType: Prefix
            backend:
                service:
                    name: web
                    port:
                        number: 80