hello-world 最小的镜像

从Docker Hub 下载这个镜像

[root@mcw1 /application]$ docker pull hello-world
Using default tag: latest
latest: Pulling from library/hello-world
2db29710123e: Pull complete
Digest: sha256:2498fce14358aa50ead0cc6c19990fc6ff866ce72aeb5546e1d59caac3d0d60f
Status: Downloaded newer image for hello-world:latest
docker.io/library/hello-world:latest

查看镜像信息

[root@mcw1 /application]$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
httpd latest dabbfbe0c57b 3 days ago 144MB
hello-world latest feb5d9fea6a5 3 months ago 13.3kB

运行hello-world容器，很快容器就退出了

[root@mcw1 /application]$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
c8b617d91943 httpd "httpd-foreground" 25 hours ago Up 24 minutes 0.0.0.0:80->80/tcp, :::80->80/tcp sweet_curran
[root@mcw1 /application]$ docker run hello-world

Hello from Docker!
This message shows that your installation appears to be working correctly.
......
[root@mcw1 /application]$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
c8b617d91943 httpd "httpd-foreground" 25 hours ago Up 25 minutes 0.0.0.0:80->80/tcp, :::80->80/tcp sweet_curran
[root@mcw1 /application]$ docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
81f8c132267c hello-world "/hello" About a minute ago Exited (0) About a minute ago hungry_keldysh