apt安装nginx

nano /etc/apt/sources.list

deb http://nginx.org/packages/debian/ bullseye nginx
deb-src http://nginx.org/packages/debian/ bullseye nginx

wget http://nginx.org/keys/nginx_signing.key
apt-key add nginx_signing.key

apt update -y

apt install nginx

sudo apt remove nginx 
sudo apt purge nginx  
rm -rf /etc/nginx
sudo apt autoremove 
apt -o DPkg::options::=--force-confmiss --reinstall install nginx