How to setup a .netcore application with Kubernetes

I have the following deployment configuration file for a .NET core 5.0 web api which I am trying to deploy on my DigitalOcean Kubernetes Cluster

apiVersion: apps/v1
kind: Deployment
metadata:
  name: test-email
  labels:
    app: test-email
spec:
  replicas: 1
  selector:
    matchLabels:
      app: test-email-deployment
  template:
    metadata:
      labels:
        app: test-email-deployment
    spec:
      containers:
      - name: test-email-deployment
        image: booij/email.service
        ports:
        - containerPort: 2000
        resources:
          requests:
            memory: 50Mi
            cpu: 50m
          limits:
            memory: 100Mi
            cpu: 1000m
        env:
        - name: ASPNETCORE_ENVIRONMENT
          value: Staging
---
apiVersion: v1
kind: Service
metadata:
  name: test-email-service
  annotations:
    service.beta.kubernetes.io/do-loadbalancer-name: "test-email-loadbalancer"
    service.beta.kubernetes.io/do-loadbalancer-protocol: "http"
    service.beta.kubernetes.io/do-loadbalancer-healthcheck-path: "/index.html"
spec:
  selector:
    app: test-email-deployment
  type: LoadBalancer
  externalTrafficPolicy: Local
  ports:
    - protocol: TCP
      port: 80
      targetPort: 2000

When I check the container logs everything seems to work, but the DigitalOcean loadbalancer says it is unhealthy, so the status of the loadbalancer is down. I have configured the loadbalancer to use “/index.html” which is the landing page of my api and provides a 200 OK status or is something else required? What am I missing or doing wrong?