1.查看镜像，如果没有 那么使用docker pull拉取镜像

J:\docker>docker images
REPOSITORY                  TAG                                              IMAGE ID            CREATED             SIZE
centos                      7                                                8652b9f0cb4c        3 weeks ago         204MB
docker/getting-started      latest                                           67a3629d4d71        5 weeks ago         27.2MB
redis                       5.0.9                                            987b553c835f        5 weeks ago         98.3MB
docker/desktop-kubernetes   kubernetes-v1.19.3-cni-v0.8.5-critools-v1.17.0   7f85afe431d8        7 weeks ago         285MB
wurstmeister/kafka          latest                                           40094a582680        3 months ago        435MB
centos                      latest                                           0d120b6ccaa8        3 months ago        215MB
hyperf/hyperf               latest                                           a8fdc61b1fc5        4 months ago        80.2MB
redislabs/rebloom           latest                                           03841e395ca0        4 months ago        104MB
harisekhon/hbase            1.3                                              cadb170e663b        9 months ago        236MB
wurstmeister/zookeeper      latest                                           3f43f72cb283        22 months ago       510MB

2.

创建两个容器并使用进行连接
J:\docker>docker run -it --name centos1 8652b9f0cb4c /bin/sh
sh-4.2# su
[root@104de7aeeee2 /]#

J:\docker>docker run -it --name centos2 8652b9f0cb4c /bin/sh
sh-4.2# su
[root@8b65cabe3c8c /]#




查看容器
J:\docker>docker ps
CONTAINER ID        IMAGE               COMMAND             CREATED              STATUS              PORTS               NAMES
8b65cabe3c8c        8652b9f0cb4c        "/bin/sh"           28 seconds ago       Up 27 seconds                           centos2
104de7aeeee2        8652b9f0cb4c        "/bin/sh"           About a minute ago   Up About a minute                       centos1