Using Docker Desktop instead of PWK

[ajeetraina]

As Play with Kubernetes is not stable, it would be great to use Multi-Node K8s cluster feature of Docker Desktop for all our labs.

[shanxS]

Came here to create the same issue. I am still at the beginning. Here's my stab at creating master & 1 worker node setup on Macbook air. Far from complete but might be useful for someone: https://gist.github.com/shanxS/635fc0e72d819c56c596d1112f0b4b82

[ajeetraina]

@shanxS Would you like to contribute via PR.