Comment # 8 on bug 1215538 from Dr. Werner Fink

Main problems are: Creation of system group/user man
                   Creation of /var/cache/man
                   Creation of the various index.db below /var/cache/man/
currently done with systemd.

I really want to know why one like to use man in a container ...
now I've readded the old why of adding group/user man if not already done
by systemd also creating /var/cache/man if not done by systemd as well as use
filetriggers lua scriptlets to get the index.db below /var/cache/man/ created
as well as uptodate