"docs/INSTALL_DEBIAN_4.0.txt" did not exist on "3fac9871b061818ea6b0b106e7d1fef2189b0adf"
The source project of this merge request has been removed.
change adduser to usermod -a -G in install/dist/lib/gentoo.lib.php
there are some parts where a user is added to a group with "adduser" command. changed "adduser" to "usermod -a -G" since there is no "adduser" in gentoo.