title: unable to configure the Docker daemon with file /etc/docker/daemon.json: EOF
body: <p>I am new to docker and cannot understand these errors. So, Please let me know if any more information is needed.</p>
  
  <pre><code>`$ docker --version`
  Docker version 1.12.6, build 88a4867/1.12.6
  
  `$ docker info`
   Cannot connect to the Docker daemon. Is the docker daemon running on this host?
  
  `$sudo dockerd`
  
  FATA[0000] unable to configure the Docker daemon with file /etc/docker/daemon.json: EOF
  
  `$sudo systemctl start docker`
  
  Job for docker.service failed because the control process exited with error code. See "systemctl status docker.service" and "journalctl -xe" for details.
  
  `$sudo systemctl status docker.service -l`
  
  ● docker.service - Docker Application Container Engine
     Loaded: loaded (/usr/lib/systemd/system/docker.service; disabled; vendor preset: disabled)
     Active: failed (Result: exit-code) since Wed 2017-07-26 14:30:21 EDT; 8min ago
    Docs: http://docs.docker.com
  
    Process: 5835 ExecStart=/usr/bin/dockerd-current --add-runtime docker-runc=/usr/libexec/docker/docker-runc-current --default-runtime=docker-runc --authorization-plugin=rhel-push-plugin --exec-opt native.cgroupdriver=systemd --userland-proxy-path=/usr/libexec/docker/docker-proxy-current $OPTIONS $DOCKER_STORAGE_OPTIONS $DOCKER_NETWORK_OPTIONS $ADD_REGISTRY $BLOCK_REGISTRY $INSECURE_REGISTRY (code=exited, status=1/FAILURE)
   Main PID: 5835 (code=exited, status=1/FAILURE)
  
  Jul 26 14:30:21: Starting Docker Application Container Engine...
  Jul 26 14:30:21 dockerd-current[5835]: time="2017-07-26T14:30:21-04:00" level=fatal msg="unable to configure the Docker daemon with file /etc/docker/daemon.json: EOF\n"
  Jul 26 14:30:21 systemd[1]: docker.service: main process exited, code=exited, status=1/FAILURE
  Jul 26 14:30:21 systemd[1]: Failed to start Docker Application Container Engine.
  Jul 26 14:30:21 systemd[1]: Unit docker.service entered failed state.
  Jul 26 14:30:21 systemd[1]: docker.service failed.
  </code></pre>
  
  <p>Please let me know if I need to check anything else.</p>