[acme]( https://github.com/acmesh-official/acme.sh)用它拿 ssl 证书
```
server {
listen 443 ssl http2;
server_name caiml.live;

index index.html;
root /var/www/html;
ssl on;
ssl_protocols TLSv1 TLSv1.1 TLSv1.2 TLSv1.3;
ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384;
ssl_prefer_server_ciphers on;
ssl_certificate /etc/nginx/ssl/cert.pem;
ssl_certificate_key /etc/nginx/ssl/key.pem;

# alist
location / {
proxy_pass http://127.0.0.1:5244;
proxy_redirect https://$host/ https://$http_host/;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_ssl_server_name on;
proxy_set_header Host $host;
}

location /4cdf0966-ce1b-4af5-8af5-10106f6a03f0 {
if ($http_upgrade != "websocket") {
return 404;
}
proxy_pass http://127.0.0.1:59028;
proxy_redirect off;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_read_timeout 52w;
}
}
```