how to install docker on ubuntu digitalocean code example

Example: install kubernetes on ubuntu

# Installing Kubectl
curl -LO https://storage.googleapis.com/kubernetes-release/release/`curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt`/bin/linux/amd64/kubectl
chmod +x ./kubectl
sudo mv ./kubectl /usr/local/bin/kubectl
kubectl version --client
# Installing Minikube
curl -Lo minikube https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64 \
  && chmod +x minikube
sudo mkdir -p /usr/local/bin/
sudo install minikube /usr/local/bin/
minikube start --driver=none 
# If this fails with a message "requires conntrack to be installed in root's path"
sudo apt install conntrack
# then try again
sudo minikube start --driver=none
#check the status
sudo minikube status
# Output:
#host: Running
#kubelet: Running
#apiserver: Running
#kubeconfig: Configured

#It is suggested (by minikube) to change the ownership and
#permissions of ~/.kube and ~/.minikube after the installation.

sudo chown -R $USER $HOME/.kube
sudo chown -R $USER $HOME/.minikube