ubuntu虚拟机安装docker 成功实践记录

docker 安装

1. 首先移除老的docker版本

sudo apt-get remove docker docker-engine docker.io containerd runc

2. apt 更新

sudo apt-get update

　若出现GPG error: https://www.rabbitmq.com/debian testing InRelease: The following signatures couldn\'t be verified because the public key is not available: NO_PUBKEY 6B73A36E6026DFCA错误，使用以下步骤解决

sudo apt-get clean
sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 696DBE66A72D76DA
sudo apt update
sudo apt-get update

3.安装ca HTTPS等依赖

 sudo apt-get install \
    apt-transport-https \
    ca-certificates \
    curl \
    gnupg-agent \
    software-properties-common

4. 添加docker gpg key

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

5.安装docker

sudo apt-get update

sudo apt-get install docker-ce docker-ce-cli containerd.io

　然后就完成安装了

完成后可以使用命令

sudo docker run hello-world

测试一下是否成功