nginx proxy manager用cloudflare申请Let's Encrypt证书

在使用docker部署反向代理nginx proxy manager时，cloudflare申请Let's Encrypt证书一直出问题的解决方法

1、首先更新默认国内源

目录文件为 /etc/apt/sources.list

deb http://mirrors.aliyun.com/debian/ buster main non-free contrib
deb-src http://mirrors.aliyun.com/debian/ buster main non-free contrib
deb http://mirrors.aliyun.com/debian-security buster/updates main
deb-src http://mirrors.aliyun.com/debian-security buster/updates main
deb http://mirrors.aliyun.com/debian/ buster-updates main non-free contrib
deb-src http://mirrors.aliyun.com/debian/ buster-updates main non-free contrib
deb http://mirrors.aliyun.com/debian/ buster-backports main non-free contrib
deb-src http://mirrors.aliyun.com/debian/ buster-backports main non-free contrib

2、执行以下命令

apt update
apt install build-essential libssl-dev libffi-dev python3-dev
pip install -i https://pypi.tuna.tsinghua.edu.cn/simple certbot-dns-cloudflare
pip install -i https://pypi.tuna.tsinghua.edu.cn/simple zope

问题即可解决