In Debian, there is debian/copyright as a file that describes the copyright information of software, but the update of this is left to the package maintainer, and there are some packages that are not updated and the contents do not match. Therefore, Debian users may use a tool to check it separately from his file contents. This is too efficient and think that it is not good for Debian itself. We want to update as much as possible and reduce the burden on developers and users. This time, not only us but also the other works are being made, and we summarized the current situation and how to update and keep debian/copyright.
The Debian base image size and features provided are increasing year by year. Therefore, due to its large size for embedded devices and containers, Debian may not be adopted by the system. This time, while following the existing package system, we examined and implemented an image construction method using busybox and mmdebstrap.