原文：https://www.runoob.com/docker/centos-docker-install.html
我的sudo docker run hello-world的显示结果
1 0e03****26d7: Pull complete
2 Digest: sha256:7******a449bf11e0941a1fd****8b2600777c5
3 Status: Downloaded newer image for hello-world:latest
4
5 Hello from Docker!
6 This message shows that your installation appears to be working correctly.
7
8 To generate this message, Docker took the following steps:
9 1. The Docker client contacted the Docker daemon.
10 2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
11 (amd64)
12 3. The Docker daemon created a new container from that image which runs the
13 executable that produces the output you are currently reading.
14 4. The Docker daemon streamed that output to the Docker client, which sent it
15 to your terminal.
16
17 To try something more ambitious, you can run an Ubuntu container with:
18 $ docker run -it ubuntu bash
19
20 Share images, automate workflows, and more with a free Docker ID:
21 https://hub.docker.com/
22
23 For more examples and ideas, visit:
24 https://docs.docker.com/get-started/
