卸载版本的docker
sudo apt-get remove docker docker-engine docker.io
安装可选内核模块
从 Ubuntu 14.04 开始,一部分内核模块移到了可选内核模块包 ( linux-image-extra-* ) ,以
减少内核软件包的体积。正常安装的系统应该会包含可选内核模块包,而一些裁剪后的系统
可能会将其精简掉。 AUFS 内核驱动属于可选内核模块的一部分,作为推荐的 Docker 存储层
驱动,一般建议安装可选内核模块包以使用 AUFS 。如果没有安装的话可以使用下面的命令安装
sudo apt-get update
sudo apt-get install linux-image-extra-$(uname -r) linux-image-extra-virtual
安装Docker CE
由于 apt 源使用 HTTPS 以确保软件下载过程中不被篡改。因此,我们首先需要添加使用
HTTPS 传输的软件包以及 CA 证书。
sudo apt-get update
sudo apt-get install apt-transport-https ca-certificates curl software-properties-common
鉴于国内网络问题,强烈建议使用国内源,官方源请在注释中查看。为了确认所下载软件包的合法性,需要添加软件源的 GPG 密钥
curl -fsSL https://mirrors.ustc.edu.cn/docker-ce/linux/ubuntu/gpg | sudo apt-key add -
# 官方源
#curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
然后,我们需要向 source.list 中添加 Docker 软件源
sudo add-apt-repository "deb [arch=amd64] https://mirrors.ustc.edu.cn/docker-ce/linux/ubuntu $(lsb_release -cs) stable"
# 官方源
# sudo add-apt-repository # "deb [arch=amd64] https://download.docker.com/linux/ubuntu # $(lsb_release -cs) # stable
更新 apt 软件包缓存,并安装 docker-ce
sudo apt-get update
sudo apt-get install docker-ce
启动docker CE
sudo systemctl enable docker
sudo systemctl start docker
测试安装是否正确
sudo docker run hello-world
Unable to find image ‘hello-world:latest‘ locally
latest: Pulling from library/hello-world
ca4f61b1923c: Pull complete
Digest: sha256:445b2fe9afea8b4aa0b2f27fe49dd6ad130dfe7a8fd0832be5de99625dad47cd
Status: Downloaded newer image for hello-world:latest
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.
(amd64)
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/
如果出现上述信息,说明安装成功
镜像加速
由于国外的镜像有时候网络访问过慢,需要使用国内的镜像加速
对于使用 systemd 的系统,请在 /etc/docker/daemon.json 中写入如下内容(如果文件不存
在请新建该文件)
{
"registry-mirrors": [
"https://registry.docker-cn.com"
]
}
之后重启启动系统
sudo systemctl daemon-reload
sudo systemctl restart docker