Sometimes apt will fail due a transient network issue. Often that
will be fixed by retrying.
This is particularly useful as part of an automated build pipeline.
sysv-rc and util-linux are used in the postinst scripts
of some packages, and so those packages won't install
if they aren't available.
sysv-rc contains update-rc.d, so any package that installs
a service would fail to install. Those packages are common
to install in to containers.
util-linux contains the getopt command which some scripts
expect to find.
Some licences require that the binaries be shipped with a copy
of the license. Debian does this in the copyright files in
/usr/share/doc. We need to leave those files there to keep
the image distributable.
James Westby