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linux-tutorial/docs/docker/basics/docker-helloworld.md

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Docker 之 Hello World

前提

确保你的环境上已经成功安装 Docker。

Hello World 实例

  1. 使用 docker version 命令确保你的环境已成功安装 Docker。
# docker version
Client:
 Version:         1.13.1
 API version:     1.26
 Package version: <unknown>
 Go version:      go1.8.3
 Git commit:      774336d/1.13.1
 Built:           Wed Mar  7 17:06:16 2018
 OS/Arch:         linux/amd64

Server:
 Version:         1.13.1
 API version:     1.26 (minimum version 1.12)
 Package version: <unknown>
 Go version:      go1.8.3
 Git commit:      774336d/1.13.1
 Built:           Wed Mar  7 17:06:16 2018
 OS/Arch:         linux/amd64
 Experimental:    false
  1. 使用 docker run 命令运行 Hello World 镜像。
docker run hello-world

Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
ca4f61b1923c: Pull complete
Digest: sha256:ca0eeb6fb05351dfc8759c20733c91def84cb8007aa89a5bf606bc8b315b9fc7
Status: Downloaded newer image for hello-world:latest

Hello from Docker!
This message shows that your installation appears to be working correctly.
...
  1. 使用 docker image ls命令查看镜像
docker image ls
REPOSITORY                  TAG                 IMAGE ID            CREATED             SIZE
docker.io/maven             latest              76c9ab5df55b        7 days ago          737 MB
docker.io/python            2.7-slim            5541369755c4        13 days ago         139 MB
docker.io/hello-world       latest              f2a91732366c        4 months ago        1.85 kB
docker.io/java              8-jre               e44d62cf8862        14 months ago       311 MB
docker.io/training/webapp   latest              6fae60ef3446        2 years ago         349 MB
  1. 使用 docker container ls --all 命令查看容器

如果查看正在运行的容器，不需要添加 --all 参数。

docker container ls --all
CONTAINER ID        IMAGE                   COMMAND             CREATED             STATUS                     PORTS               NAMES
a661d957c6fa        hello-world             "/hello"            2 minutes ago       Exited (0) 2 minutes ago                       mystifying_swartz
3098f24a1064        docker.io/hello-world   "/hello"            6 minutes ago       Exited (0) 6 minutes ago                       sad_yonath
4c98c4f18a39        hello-world             "/hello"            8 minutes ago       Exited (0) 8 minutes ago                       admiring_banach