apt-get install lighttpd php-cgi
 
echo cgi.fix_pathinfo = 1 >> /etc/php/7.0/cgi/php.ini

/etc/lighttpd/lighttpd.conf

#přidat modul
  "mod_fastcgi",

aktivovat fastcgi

lighty-enable-mod fastcgi
lighttpd-enable-mod fastcgi-php  

restartovat

/etc/init.d/lighttpd force-reload