提示
基于 Ubuntu 环境，亲测 Ubuntu 22.04 是通过的。
按顺序输入下列命令即可：
$ sudo apt install -y debian-keyring debian-archive-keyring apt-transport-https $ curl -1sLf 'https://dl.cloudsmith.io/public/caddy/xcaddy/gpg.key' | sudo gpg --dearmor -o /usr/share/keyrings/caddy-xcaddy-archive-keyring.gpg $ curl -1sLf 'https://dl.cloudsmith.io/public/caddy/xcaddy/debian.deb.txt' | sudo tee /etc/apt/sources.list.d/caddy-xcaddy.list $ sudo apt update $ sudo apt install xcaddy
