最新ubuntu20.04安装docker流畅教程

使用清华镜像源

//编辑/etc/apt/sources.list

# 默认注释了源码镜像以提高 apt update 速度，如有需要可自行取消注释
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-updates main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-updates main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-backports main restricted universe multiverse
# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-backports main restricted universe multiverse

# 以下安全更新软件源包含了官方源与镜像站配置，如有需要可自行修改注释切换
deb http://security.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse
# deb-src http://security.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse

# 预发布软件源，不建议启用
# deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-proposed main restricted universe multiverse
# # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-proposed main restricted universe multiverse

开始部署

##读取数据源，安装依赖包
sudo apt update
sudo apt install apt-transport-https ca-certificates curl gnupg-agent software-properties-common

##使用下面的 curl 导入源仓库的GPG key：
sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -

##将 Docker APT 软件源添加到你的系统：
sudo add-apt-repository \
"deb [arch=amd64] https://download.docker.com/linux/ubuntu \
$(lsb_release -cs) \
stable"

##安装docker
sudo apt install docker-ce docker-ce-cli containerd.io

E: 无法下载 https://download.docker.com/linux/ubuntu/dists/focal/pool/stable/amd64/containerd.io_1.7.25-1_amd64.deb Could not handshake: Error in the pull function. [IP: 2600:9000:2864:c00:3:db06:4200:93a1 443]
E: 有几个软件包无法下载，要不运行 apt-get update 或者加上 --fix-missing 的选项再试试？

安装docker报错使用这个方法解决点击

##添加当前用户到docker组
sudo groupadd docker

sudo gpasswd -a ${USER} docker

sudo service docker restart

newgrp - docker

sudo chmod o+rw /var/run/docker.sock

##配置阿里云镜像加速器，追加了“https://docker.yccp.site"一个拉取镜像地址，防止报错
sudo tee /etc/docker/daemon.json <<-'EOF'
{
"registry-mirrors": ["https://750xi8h6.mirror.aliyuncs.com","https://docker.yccp.site"]
}
EOF
#重新加载，重启服务
sudo systemctl daemon-reload
sudo systemctl restart docker

##测试拉取镜像，成功
uto@uto:~$ docker pull nginx                                                
Using default tag: latest
latest: Pulling from library/nginx
bc0965b23a04: Pull complete 
650ee30bbe5e: Pull complete 
8cc1569e58f5: Pull complete 
362f35df001b: Pull complete 
13e320bf29cd: Pull complete 
7b50399908e1: Pull complete 
57b64962dd94: Pull complete 
Digest: sha256:fb197595ebe76b9c0c14ab68159fd3c08bd067ec62300583543f0ebda353b5be
Status: Downloaded newer image for nginx:latest
docker.io/library/nginx:latest
uto@uto:~$ docker images
REPOSITORY   TAG       IMAGE ID       CREATED       SIZE
nginx        latest    66f8bdd3810c   3 weeks ago   192MB

采用大神博客

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