Launch Redis cluster via docker-compose for local development purpose

This repo is cloned from: https://github.com/yowko/docker-compose-redis-cluster, here're some changes to fit my own needs:

1. Upgrade Redis version by using image 6.0.7-alpine
2. Simplify the usage by removing the master/slave password (CAUTION: DO NOT USE IT ON PRODUCTION ENVIRONMENT)

Prerequisites

• docker
• docker-compose

Usage

Start Redis cluster

ip=$(ipconfig getifaddr en0) docker-compose up -d --build

The redis cluster will be ready on 127.0.0.1:7000

Stop Redis cluster

 docker-compose down -v