ubuntu系统安装docker详细教程

1.卸载旧版本docker

sudo apt-get remove docker docker-engine docker-ce docker.io

更新apt包索引

sudo apt-get update

2.安装apt依赖包，用于通过HTTPS来获取仓库

sudo apt-get install -y apt-transport-https ca-certificates curl software-properties-common

3.添加 Docker 的官方 GPG 密钥

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -

4.设置stable存储库

sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"

更新apt包索引

sudo apt-get update

5.安装新版本Docker CE

sudo apt-get install -y docker-ce

6.查看docker服务是否启动

systemctl status docker

启动docker服务

sudo systemctl start docker

加入开机自动启动

sudo systemctl enable docker

7.验证docker

sudo docker run hello-world