I've set up a private container registry that it is integrated with bitbucket successfully. However, I am not able to pull the images from my GKE Cluster.

I created a service account with the role "Project Viewer", and a json key for this account. Then I created the secret in the cluster/namespace running

kubectl create secret docker-registry gcr-json-key \
 --docker-server=gcr.io \
 --docker-username=_json_key \
 --docker-password="$(cat ~/code/bitbucket/miappsrl/miappnodeapi/secrets/registry/miapp-staging-e94050365be1.json)" \
 --docker-email=agusmiappgcp@gmail.com

And in the deployment file I added

...
      imagePullSecrets:
    - name: gcr-json-key
...

But when I apply the deployment I get

 ImagePullBackOff

And when I do a kubectl describe pod <pod_name> I see

Failed to pull image "gcr.io/miapp-staging/miappnodeapi": rpc error: code = Unknown desc = Error response from daemon: Get https://gcr.io/v2/: dial tcp: lookup gcr.io on 169.254.169.254:53: no such host

I can't realize what I am missing, I understand it can resolve the dns inside the cluster, but not sure what I should add