I want to locally setup a kubernetes deployment for a nextjs app for testing purposes.

I want to create a basic deployment for my app image with 3 replicas. So I have this yaml file.

apiVersion: apps/v1
kind: Deployment
metadata:
  name: myapp-deployment
  labels:
    app: myapp
spec:
  replicas: 3
  selector:
    matchLabels:
      app: myapp
  template:
    metadata:
      labels:
        app: myapp
    spec:
      containers:
        - name: myappclient
          image: myapp-image:latest
          imagePullPolicy: IfNotPresent
          ports:
            - containerPort: 3000
      restartPolicy: Always
---
apiVersion: v1
kind: Service
metadata:
  name: myapp-service
spec:
  selector:
    app: myapp
  type: LoadBalancer
  ports:
    - protocol: TCP
      port: 3000
      targetPort: 3000

So, this works fine but I need to have a shared volume for these replicas. After a lot of tries I had some errors especially with updating the ISR pages (e.g after updating content only one pod gets the changes etc). So now I have figure out that maybe I need to initialize an initContainer first to create the path where the data will be shared to pods. So I enchance the above (deployment part) file like this:

apiVersion: apps/v1
kind: Deployment
metadata:
  name: myapp-deployment
  labels:
    app: myapp
spec:
  replicas: 3
  selector:
    matchLabels:
      app: myapp
  template:
    metadata:
      labels:
        app: myapp
    spec:
      initContainers:
        - name: shared-volume
          image: myapp-image:latest
          command: ["sh", "-c", "mkdir -p /usr/src/mydata"]
          volumeMounts:
            - name: shared-data
              mountPath: /usr/src/mydata
      containers:
        - name: myappclient
          image: myapp-image:latest
          imagePullPolicy: IfNotPresent
          ports:
            - containerPort: 3000
          volumeMounts:
            - name: shared-data
              mountPath: /usr/src/mydata
      restartPolicy: Always
      volumes:
        - name: shared-data
          emptyDir: {}

where

/usr/src/mydata 

is the path that I want & has created while building the image with Dockerfile.The case is that whatever I try I get the same errors:

kubectl logs <pod_name>:

Defaulted container "myappclient" out of: myappclient, shared-volume (init)
Error from server (BadRequest): container "myappclient" in pod "pod-name" is waiting to start: PodInitializing

kubectl describe pod <pod_name>:

Pulling image "myapp-image:latest"
  Warning  Failed     14m (x4 over 15m)   kubelet            Failed to pull image "myapp-image:latest": Error response from daemon: Get "http://localhost/v2/": dial tcp 127.0.0.1:80: connect: connection refused
  Warning  Failed     14m (x4 over 15m)   kubelet            Error: ErrImagePull
  Warning  Failed     14m (x6 over 15m)   kubelet            Error: ImagePullBackOff

(This running at windows machine using minikube for cluster setup and kubectl CLI)

Any ideas?
Thanks in advance!