删除nginx

apt-get -y autoremove --purge nginx

添加nginx官方仓库

echo "deb http://nginx.org/packages/debian/ buster nginx" >> /etc/apt/sources.list
echo "deb-src http://nginx.org/packages/debian/ buster nginx"  >> /etc/apt/sources.list
wget http://nginx.org/keys/nginx_signing.key && apt-key add nginx_signing.key
apt-get update -y

安装nginx

apt-get install -y nginx
# 或安装指定版本的nginx
# 查看版本
# apt-cache madison nginx
# apt-get install -y nginx=1.18.0-2~buster

额外再附赠2个基于Debian10，nginx 1.18.0下编译的modules ngx_cache_purge、ngx_brotli