Docker builds redis master-slave mode

1. Install and configure docker and set up image acceleration



2. Search for redis image and pull


3. View the current image of the system

4. Run redis-server container and make persistent configuration

5. Docker starts 3 redis container services, use 6379-6381 3 ports

6, enter the docker container to view the current redis role



7, configure the redis cluster, one master and two slaves






8, the test is successful