https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2016-8a567c23eb is an atomic-reactor update for epel7, but it requires python-docker-squash.
Please build it for epel7 to satisfy this dependency.
*** Bug 1418694 has been marked as a duplicate of this bug. ***
*** Bug 1435129 has been marked as a duplicate of this bug. ***
Closing, atomic reactor is no longer in EPEL 7.