Sample NGINX Pod exposed via Ingress rule

sample-app.yml

apiVersion: v1
kind: Pod
metadata:
  name: webserver
  labels:
    app: nginx
    name: sample
spec:
  containers:
  - name: main
    image: nginx:alpine
    resources:
      limits:
        memory: "64Mi"
        cpu: "200m"
      requests:
        memory: "48Mi"
        cpu: "100m"
    ports:
      - containerPort: 80
---
apiVersion: v1
kind: Service
metadata:
  name: web
spec:
  selector:
    app: nginx
    name: sample
  ports:
  - port: 8080
    targetPort: 80
---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: sample-rule
  annotations:
    kubernetes.io/ingress.class: "nginx"
spec:
  rules:
    - host: "sample.thns.dev"
      http:
        paths:
          - path: /
            pathType: "Prefix"
            backend:
              service:
                name: web
                port: 
                  number: 8080