在Ubuntu上安装Docker

在Ubuntu上安装Docker官网https://docs.docker.com/engine/install/ubuntu/

安装

1.更新软件包索引并安装软件包以允许使用 基于 HTTPS 的存储库

sudo apt-get update
sudo apt-get install ca-certificates curl gnupg

2.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

3.设置存储库

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

4.更新包索引

//这步可省略
sudo apt-get update

5.安装docker引擎

sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

6.docker是否安装成功

sudo docker run hello-world

7.命令补全工具

//安装bash_completion
sudo apt install bash-completion

//加载bash_completion
source /etc/bash_completion