Basic Nginx Host conf

nginx-example-host-conf

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

    server_name www.example.com example.com;

    root /var/www/example.com;
    index index.html;

    location ^~ /.well-known/acme-challenge/ {

        # Set correct content type. According to this:
	# https://community.letsencrypt.org/t/using-the-webroot-domain-verification-method/1445/29
	# Current specification requires "text/plain" or no content header at all.
	# It seems that "text/plain" is a safe option.
	default_type "text/plain";

	# This directory must be the same as in /etc/letsencrypt/cli.ini
	# as "webroot-path" parameter. Also don't forget to set "authenticator" parameter
	# there to "webroot".
	# Do NOT use alias, use root! Target directory is located here:
	# /var/www/common/letsencrypt/.well-known/acme-challenge/
	root         /var/www/letsencrypt;
    }

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