nginx-proxy

server {
    listen 443 http2;
    listen [::]:443 http2;

    server_name example.com;

    ssl_certificate /etc/letsencrypt/live/example.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/example.com/privkey.pem;

    # set max upload size
    client_max_body_size 512M;

    location = /robots.txt {
        allow all;
        log_not_found off;
        access_log off;
        proxy_pass http://10.8.1.2:4433;
        proxy_ssl_server_name on;
        proxy_ssl_name example.com;
        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_set_header X-Forwarded-Proto $scheme;
    }
    
    location ^~ /.well-known {
        location = /.well-known/carddav { return 301 /remote.php/dav; }
        location = /.well-known/caldav { return 301 /remote.php/dav; }
        location = /.well-known/acme-challenge { try_files $uri $uri/ =404; }
        location = /.well-known/pki-validation { try_files $uri $uri/ =404; }

        # Let Nextcloud's API for `/.well-known` URIs handle all other
        # requests by passing them to the front-end controller.
        return 301 /index.php$request_uri;
    }

    location / {
        proxy_pass http://10.8.1.2:4433;
        proxy_ssl_server_name on;
        proxy_ssl_name example.com;
        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_set_header X-Forwarded-Proto $scheme;
    }
}

server {
       if ($host = example.com) {
               return 301 https://$host$request_uri;
       }

       server_name example.com;
       listen 80;
       return 404;
}