Created attachment 926369 [details]
Fixed unit file for systemd.

Description of problem:

Docker does not use Parameters from /etc/sysconfig/docker

Expected behavior is that the daemon options in $DOCKER_OPTS (defined in /etc/sysconfig/docker) are used in the daemons exec.

Solution: systemd unit file (docker.service) should use $DOCKER_OPTS in ExecStart.

Version-Release number of selected component (if applicable):
docker-io-1.0.0-1.el7.x86_64, CentOS Linux release 7.0.1406 (Core)

How reproducible:
1. Graph-Directory (data-root for docker) is created in the wrong place
2. Daemon in ps without given options from DOCKER_OPTS

Steps to Reproduce:
1. Become root.
2. yum -y install docker-io
3. systemctl stop docker.service
4. echo "DOCKER_OPTS='-g=/docker-root'" > /etc/sysconfig/docker
5. systemctl start docker.service
6. test -d /docker-root || echo "fail"
7. ps -ef | grep -v grep | grep '\-g=/docker-root' || echo "fail"

Actual results:
1. Graph-Directory (data-root for docker) is created in the wrong place
2. Daemon in ps without given options from DOCKER_OPTS

Expected results:
1. /docker-root should be created
2. the docker daemon should be running with -g=/docker-root

Additional info: