nginx-letsencrypt-template-1st

server {
    listen 80 default_server;
    listen [::]:80 default_server;

    ### ===== added for lets-encrypt-support =====
        location ~ /.well-known {
                allow all;
        }

    ### ===== adjusted servername / webroot =====
        server_name xyz.com www.xyz.com;
        root /var/www/xyz.com/html;

    # Add index.php to the list if you are using PHP
    index index.html index.htm index.nginx-debian.html;

    location / {
        # First attempt to serve request as file, then
        # as directory, then fall back to displaying a 404.
        try_files $uri $uri/ =404;
    }
}