docker 笔记(1) -- 安装


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参考

菜鸟教程 -- docker


前提条件

docker 要求 Ubuntu 系统的内核版本高于 3.10

root@pinsily:~# uname -r
4.4.0-79-generic

使用脚本安装 Docker

1. 获取最新版本的 Docker 安装包

root@pinsily:~# wget -qO- https://get.docker.com/ | sh

开始下载脚本并且安装 Docker 及依赖包

# Executing docker install script, commit: 490beaa
+ sh -c apt-get update -qq >/dev/null
+ sh -c apt-get install -y -qq apt-transport-https ca-certificates curl software-properties-common >/dev/null
+ sh -c curl -fsSL "https://download.docker.com/linux/ubuntu/gpg" | apt-key add -qq - >/dev/null
+ sh -c echo "deb [arch=amd64] https://download.docker.com/linux/ubuntu trusty edge" > /etc/apt/sources.list.d/docker.list
+ [ ubuntu = debian ]
+ sh -c apt-get update -qq >/dev/null
+ sh -c apt-get install -y -qq docker-ce >/dev/null
+ sh -c docker version
Client:
 Version:      17.10.0-ce
 API version:  1.33
 Go version:   go1.8.3
 Git commit:   f4ffd25
 Built:        Tue Oct 17 19:04:40 2017
 OS/Arch:      linux/amd64

Server:
 Version:      17.10.0-ce
 API version:  1.33 (minimum version 1.12)
 Go version:   go1.8.3
 Git commit:   f4ffd25
 Built:        Tue Oct 17 19:03:20 2017
 OS/Arch:      linux/amd64
 Experimental: false

后面还有一段提示

If you would like to use Docker as a non-root user, you should now consider
adding your user to the "docker" group with something like:

  sudo usermod -aG docker your-user

Remember that you will have to log out and back in for this to take effect!

如果是非 root 用户的话,就需要留意这条信息,在启动 docker 时需要先执行命令,your-user是当前用户名

sudo usermod -aG docker your-user

2. 启动docker 后台服务

root@pinsily:~# service docker start

3. 测试运行

root@pinsily:~# docker run hello-world

因为本地没有这个 hello-world 的镜像,所以它会自动从远程库 Docker Hub 中下载

Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
5b0f327be733: Pull complete
Digest: sha256:07d5f7800dfe37b8c2196c7b1c524c33808ce2e0f74e7aa00e603295ca9a0972
Status: Downloaded newer image for hello-world:latest

下面是测试的结果

Hello from Docker!
This message shows that your installation appears to be working correctly.

To generate this message, Docker took the following steps:
 1. The Docker client contacted the Docker daemon.
 2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
 3. The Docker daemon created a new container from that image which runs the
    executable that produces the output you are currently reading.
 4. The Docker daemon streamed that output to the Docker client, which sent it
    to your terminal.

To try something more ambitious, you can run an Ubuntu container with:
 $ docker run -it ubuntu bash

Share images, automate workflows, and more with a free Docker ID:
 https://cloud.docker.com/

For more examples and ideas, visit:
 https://docs.docker.com/engine/userguide/

docker 的安装还是挺容易的,做一下简单的记录就行