HD Install :: How to get my own bootlocal.sh after a remaster

I have remastered DSL so that my application is included when I install from the new CD.

My application and some script files are built into a .dsl file. After installing to HD, these get extracted to /opt when the system starts, as expected.

All except for one file, /opt/bootlocal.sh.

How do I remaster so that my bootlocal.sh file is used when I install to HD (or where ever)?

Failing that, is there another way that I can remaster so that my own script(s) get executed at startup?

Thanks!

May I know how did you remaster (compress root filesystem) your system back to an ISO ?

original here.