most of the computers i have seen running doudou linux don’t have a (working) dvd player.
also, for installing software dvds are a unecological burn once - use once medium…
that’s why i would like to ask you to invest some time in providing an iso that is easy to be put on a usb key.
debian iso can simply be copied over with dd… doudou linux should not be harder than that!
(background: i have bought a cute shiny doudou linux key at last weeks RMLL and had the bad surprise that it’s not bootable, it just contains an iso + some PDFs. i have already spent a few hours following multiple HOWTOs on how to get a doudou linux on that dvd-less computer! /me is sad.)