Tested April, 2019.
1. Download the Kubernetes configuration from the DigitalOcean dashboard
2. Move the Kubernetes configuration file to ~/.kube folder
```bash
$ mkdir $HOME/.kube/projectx/
$ mv ~/Downloads/projectx-staging-kubeconfig.yaml $HOME/.kube/projectx/staging-kubeconfig.yaml
```
4. List all contexts in the KUBECONFIG variable
```bash
$ export KUBECONFIG=$HOME/.kube/projectx/staging-kubeconfig.yaml:$HOME/.kube/projectx/production-kubeconfig.yaml
```
3. Install kubectl
```bash
$ brew install kubectl
```
4. List context and nodes
```bash
$ kubectl config get-contexts
$ kubectl get nodes
$ kubectl config use-context
```