server {
    listen 80 default_server;
    server_name _;

    location / {
        try_files $uri $uri/ =404;
    }

    location /.well-known/acme-challenge/ {
        alias /var/www/letsencrypt/;
        try_files $uri =404;
    }
}

server {
    listen 443 ssl default_server;
    server_name _;
    ssl_certificate     /etc/nginx/default.crt;
    ssl_certificate_key /etc/nginx/default.key;
    location / {
        try_files $uri $uri/ =404;
    }
}