sudo nano /etc/apache2/sites-enabled/000-default

<VirtualHost *:80>
	ServerAdmin webmaster@localhost

	DocumentRoot /var/www
	<Directory />
		Options FollowSymLinks
		AllowOverride None
	</Directory>
	<Directory /var/www/>
		Options Indexes FollowSymLinks MultiViews
		AllowOverride All
		Order allow,deny
		allow from all
	</Directory>

	ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/
	<Directory "/usr/lib/cgi-bin">
		AllowOverride None
		Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch
		Order allow,deny
		Allow from all
	</Directory>

	ErrorLog ${APACHE_LOG_DIR}/error.log

	# Possible values include: debug, info, notice, warn, error, crit,
	# alert, emerg.
	LogLevel warn

	CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>

<VirtualHost *:443>
DocumentRoot /var/www
ServerName xy.no-ip.biz
SSLEngine on
# SSLCertificateFile /root/server.crt
# SSLCertificateKeyFile /root/server.key

SSLCertificateFile /etc/letsencrypt/live/xy.no-ip.biz/cert.pem
SSLCertificateKeyFile /etc/letsencrypt/live/xy.no-ip.biz/privkey.pem
SSLCACertificateFile /etc/letsencrypt/live/xy.no-ip.biz/privkey.pem

</VirtualHost>