put files into webserver-directory.

install nodejs package 
install nodejs-legacy package 
install npm package
[sudo] npm -g install forever

npm install autosize
ln -s node_modules/autosize/dist/autosize.min.js 



copy files to some directory (/var/local/nodejs/wc/) and make sure permissions are good 
in the directory get the Q-library for promises:
cd /var/loca/nodejs/wc && npm install q

configure a process to keep running node.js with the server.js:
---------------------------------------------------------------
[edit] /etc/rd.local:
su - <user> -c "cd /var/local/nodejs/wc; /usr/local/bin/forever start server.js"


Configure Lighttpd:
-------------------
cd /etc/lighttps/conf-enabled
ln -s ../conf-available/10-proxy.conf

add to 10-proxy.conf:

$HTTP["url"] =~ "^/wc/.*$" {
    proxy.server  = ( "" => 
        (( "host" => "127.0.0.1", "port" => 8000 ))
    )
}


re-start lighttpd