Install redis-cli only on mac

                                                          If you're connecting to a Redis server which is running on a remote server or maybe on a docker container in your machine ... you will eventually need Redis-CLI, if you're a command-line geek.

Run the following command and that's it.

brew tap ringohub/redis-cli 
brew update && brew doctor 
brew install redis-cli

Source: https://stackoverflow.com/a/55733092/4739287