docker-compose-one-replica.yml

version: '2.2.3'
services:
  redis-master:
    container_name: "redis-master"
    image: redis
    ports:
      - "6379:6379"
    command: "redis-server /etc/redis.conf"    
    volumes:
      - "./data/master:/data/"
      - "./master.conf:/etc/redis.conf"

  redis-replica:
    container_name: "redis-replica"
    image: redis
    ports:
      - "6380:6379"
    command: "redis-server /etc/redis.conf"
    volumes:
      - "./replica.conf:/etc/redis.conf" 
    depends_on:
      - redis-master