Templates for startup script?

Just have a look at the scripts present in /etc/init.d/. Especially note the README file there. It also hints to this Debian Policy Manual section on init scripts.

Actually, what you're looking for might be /etc/init.d/skeleton:

# Short-Description: Example initscript
# Description:       This file should be used to construct scripts to be
#                    placed in /etc/init.d.