kind cluster add node code example

Example 1: copy local docker image to kind cluster

### To load local image to cluster ###

docker build -t my-custom-image:unique-tag ./my-image-dir
kind load docker-image my-custom-image:unique-tag
kubectl apply -f my-manifest-using-my-image:unique-tag

Example 2: kind load docker-image command

kind load docker-image newimage:v1 --name cluster0