I have not been able to find a configuration value for setting the "current directory" when starting my node.js application. It seems to be starting from /home/app and not /home/app/code.
Do you specifically need this, ie. what is your use-case? Could you use: http://nodejs.org/api/process.html#process_process_cwd instead?
Am gauging whether this is worthwhile adding or whether a cwd() provides it ok.