/usr/share/debmake/extra2binall/package.doc-base is in debmake 4.0.7-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | # See dh_installdocs(1)
# http://www.debian.org/doc/manuals/maint-guide/dother.en.html#doc-base
|