系统版本
本文以Ubuntu20.05系统为例安装docker，Ubuntu官方下载地址。
检查卸载老版本docker
ubuntu下自带了docker的库，不需要添加新的源。
但是ubuntu自带的docker版本太低，需要先卸载旧的再安装新的。
注：docker的旧版本不一定被称为docker，docker.io 或 docker-engine也有可能，所以我们卸载的命令为：
sudo apt-get remove docker docker-engine docker.io containerd runc
对apt的源设置
安装阿里云证书，并配置阿里云的docker源
安装阿里云gpg证书
curl -fsSL https://mirrors.aliyun.com/docker-ce/linux/ubuntu/gpg | sudo apt-key add
在指定目录下新建docker.list文件，添加阿里云镜像源
cd /etc/apt/sources.list.d
sudo touch docker.list
sudo chmod 666 docker.list
sudo echo "deb [arch=amd64] https://mirrors.aliyun.com/docker-ce/linux/ubuntu $(lsb_release -cs) stable" > docker.list
修改完成之后需要执行如下命令才会生效
更新软件源
sudo apt-get update && sudo apt-get upgrade
使用apt repository 安装
安装依赖包
sudo apt-get install ca-certificates curl gnupg
添加Docker的官方GPG密钥
sudo install -m 0755 -d /etc/apt/keyrings
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
sudo chmod a+r /etc/apt/keyrings/docker.gpg
设置docker存储库
echo \
"deb [arch="$(dpkg --print-architecture)" signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu \
"$(. /etc/os-release && echo "$VERSION_CODENAME")" stable" | \
sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
安装 Docker Engine
安装最新版本的docker和docker compose
sudo apt-get install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
查看docker 和docker compose 版本
sudo docker version
输出如下所示
Client: Docker Engine - Community
Version: 23.0.6
API version: 1.42
Go version: go1.19.9
Git commit: ef23cbc
Built: Fri May 5 21:18:22 2023
OS/Arch: linux/amd64
Context: default
permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Get "http://%2Fvar%2Frun%2Fdocker.sock/v1.24/version": dial unix /var/run/docker.sock: connect: permission denied
ubuntu@VM-2-6-ubuntu:~$ sudo docker version
Client: Docker Engine - Community
Version: 23.0.6
API version: 1.42
Go version: go1.19.9
Git commit: ef23cbc
Built: Fri May 5 21:18:22 2023
OS/Arch: linux/amd64
Context: default
Server: Docker Engine - Community
Engine:
Version: 23.0.6
API version: 1.42 (minimum version 1.12)
Go version: go1.19.9
Git commit: 9dbdbd4
Built: Fri May 5 21:18:22 2023
OS/Arch: linux/amd64
Experimental: false
containerd:
Version: 1.6.21
GitCommit: 3dce8eb055cbb6872793272b4f20ed16117344f8
runc:
Version: 1.1.7
GitCommit: v1.1.7-0-g860f061
docker-init:
Version: 0.19.0
GitCommit: de40ad0
配置开机自启动
sudo systemctl enable docker.service
sudo systemctl enable containerd.service
Ubuntu Docker 镜像加速器
sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{
"registry-mirrors": ["https://2iw6r6yn.mirror.aliyuncs.com",
"https://docker.registry.cyou",
"https://docker-cf.registry.cyou",
"https://dockercf.jsdelivr.fyi",
"https://docker.jsdelivr.fyi",
"https://dockertest.jsdelivr.fui",
"https://mirror.aliyuncs.com",
"https://dockerproxy.com",
"https://mirror.baidubce.com",
"https://docker.m.daocloud.io",
"https://docker.nju.edu.cn",
"https://docker.mirrors.situg.situ.edu.cn",
"https://docker.mirrors.ustc.edu.cn",
"https://mirror.iscas.ac.cn",
"https://docker.rainbond.cc",
"https://docker.m.daocloud.io",
"https://noohub.ru",
"https://huecker.io",
"https://dockerhub.timeweb.cloud",
"https://0c105db5188026850f80c001def654a0.mirror.swr.myhuaweicloud.com",
"https://5tqw56kt.mirror.aliyuncs.com",
"https://docker.1panel.live",
"http://mirrors.ustc.edu.cn",
"http://mirror.azure.ch/",
"https://hub.rat.dev/",
"https://docker.ckyl.me/",
"https://docker.chenby.cn",
"https://docker.hpcloud.cloud",
"https://registry.docker-cn.com"]
}
EOF
sudo systemctl daemon-reload
sudo systemctl restart docker
重启 Docker
systemctl restart docker
查看 Docker 状态
sudo systemctl status docker
参考链接：https://docs.docker.com/engine/install/ubuntu/