I’m using the newly created yum repository for CentOS 7 at “yum.dockerproject.org”.
The rpm contains both “/usr/lib/systemd/system/docker.service” and “/etc/sysconfig/docker”,
but to make the latter be read by docker, you need to rewrite the former like this:
[Service] EnvironmentFile=-/etc/sysconfig/docker ExecStart=/usr/bin/docker -d -H fd:// $other_args
Why not include this change from the RPM instead?