curl -1sLf 'https://dl.cloudsmith.io/public/caddy/stable/gpg.key' | gpg --dearmor -o /usr/share/keyrings/caddy-stable-archive-keyring.gpg echo "deb [signed-by=/usr/share/keyrings/caddy-stable-archive-keyring.gpg] https://mirrors.china.12306.work/repository/caddy/stable/deb/debian any-version main" | tee /etc/apt/sources.list.d/caddy.list apt-get update apt-get install caddy