* use docker to setup a local dev chain.
* install docker link
* update command
* Update README.md
Co-authored-by: joe petrowski <25483142+joepetrowski@users.noreply.github.com>
* more commands to start or check a node.
* purge chain in docker
Co-authored-by: joe petrowski <25483142+joepetrowski@users.noreply.github.com>