curl -L https://mirrors.lierfang.com/pxcloud/lierfang.gpg -o /etc/apt/trusted.gpg.d/lierfang.gpg
source /etc/os-release
echo "deb https://mirrors.lierfang.com/pxcloud/pxvirt $VERSION_CODENAME main" > /etc/apt/sources.list.d/pxvirt-sources.list