If Railo with Resin would suffice, Gert's suggestion, works perfectly
for us for quite some time, though I figured it out myself about two
years ago...
Specifics (one way for Windows OS):
1. Download and install Railo with Resin manually
2. At your Railo installation, say, "Program Files\Railo", there's a
batch file named install-service.bat, click on this guy to install
Railo with Resin web server.
3. Access its admin via URL,
http://127.0.0.1:8600/railo-context/admin/server.cfm
or web.cfm
Do you admin thing...
4. Test it out with your app something.
5. Modify the railo-server.xml file to fit your need...
Write a batch script for coping files and execute the install-
service.bat file,
Zip this batch script together with the entire /Railo installation,
bundle it with your client's package, bingo!