Outline on how to do it:
sudo mkdir -p /usr/local/share/adsbcompare
create file /etc/lighttpd/conf-available/87-adsbcompare.conf
with the following contents
#lighttpd configuration for adsbcompare
# redirect the slash-less URL
url.redirect += (
"^/adsbcompare$" => "/adsbcompare/"
)
alias.url += (
"/adsbcompare/" => "/usr/local/share/adsbcompare",
)
sudo lighttpd-enable-mod adsbcompare