Minikube error trouble accessing https://k8s.gcr.io

I'm playing with MiniKube and I'm experiencing this error at startup

This container is having trouble accessing https://k8s.gcr.io

More details:

😄 minikube v1.15.1 on Centos 8.2.2004

✨ Automatically selected the docker driver

✅ Using image repository

👍 Starting control plane node minikube in cluster minikube

🔥 Creating docker container (CPUs=2, Memory=2200MB) ...

❗

This container is having trouble accessing https://k8s.gcr.io

💡 To pull new external images, you may need to configure a proxy: https://minikube.sigs.k8s.io/docs/reference/networking/proxy/

🐳 Preparing Kubernetes v1.19.4 on Docker 19.03.13 ...

🔎 Verifying Kubernetes components...

🌟 Enabled addons: storage-provisioner, default-storageclass

🏄 Done! kubectl is now configured to use "minikube" cluster and "default" namespace by default

Many guide suggest to set proxy or change driver mode, I fixed in this simple way:

~ sudo systemctl restart docker.service

~ minikube delete

~ minikube start --driver=docker

Vittorio Pavesi