Kubernetes https://registry-1.docker.io/v2/: dial tcp: lookup registry-1.docker.io: Temporary failure in name resolution

I have just setup a kubernetes cluster on my raspberrypis (3 in total) and am getting this error when trying to pull a docker image from a public repo:

Failed to pull image "docker.io/jettech/kube-webhook-certgen:v1.2.2": rpc error: code = Unknown desc = Error response from daemon: Get https://registry-1.docker.io/v2/: dial tcp: lookup registry-1.docker.io: Temporary failure in name resolution

I have only found webpages which tell you to use a image pull secret but since it is a public repo im kinda confused... At work we didn't have to use a secret for public images.

This is the service that i am trying to deploy.

    apiVersion: v1
kind: Service
metadata:
  name: echo1
spec:
  ports:
  - port: 80
    targetPort: 5678
  selector:
    app: echo1
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: echo1
spec:
  selector:
    matchLabels:
      app: echo1
  replicas: 1
  template:
    metadata:
      labels:
        app: echo1
    spec:
      containers:
      - name: echo1
        image: hashicorp/http-echo
        args:
        - "-text=echo1"
        ports:
        - containerPort: 5678

But it doesn't make a difference on what service i want to deploy even the ingress-nginx doesn't work:

kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/controller-v0.34.1/deploy/static/provider/do/deploy.yaml

Thanks in advance!