Summary says it pretty much all. It is needed to successfully install
postgresql-server package into RHEL7 docker image.
This should be filed against 'fakesystemd' component which does not exist in
*** Bug 1104138 has been marked as a duplicate of this bug. ***
*** Bug 1122252 has been marked as a duplicate of this bug. ***
We have switched from fakesystemd to systemd-container in the latest images.
*** This bug has been marked as a duplicate of bug 1186307 ***