apt update  
apt install apt-transport-https ca-certificates curl software-properties-common  
apt install apt-transport-https ca-certificates curl 
curl -fsSL https://download.docker.com/linux/debian/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg  
curl -fsSL https://download.docker.com/linux/debian/gpg |gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg  
ping puqcloud.com
ip add
ip add
reboot
