微服务部署（二）：ubuntu上安装docker

 参考网址 https://docs.docker.com/engine/install/ubuntu/

sudo apt-get update
sudo apt-get install \
    ca-certificates \
    curl \
    gnupg \
    lsb-release

 curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg

echo \
  "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu \
  $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

sudo apt-get update

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

参考网址  https://docs.docker.com/engine/install/linux-postinstall/  ，执行到第四步

 sudo groupadd docker
 sudo usermod -aG docker $USER
 newgrp docker 
 docker run hello-world

docker安装完成