Problems in docker Development

  docker, question
Run 'docker COMMAND --help' for more information on a command.
 ➜  run ddocker run -it  b.gcr.io/tensorflow/tensorflow
 zsh: command not found: ddocker
 ➜  run docker run -it  b.gcr.io/tensorflow/tensorflow
 docker: Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?  .
 See 'docker run --help'.
 ➜  run  journalctl -xn
 zsh: command not found: journalctl
 ➜  run systemctl status docker.service
 zsh: command not found: systemctl
 ➜  run ervice docker start
 zsh: command not found: ervice
 Run # # # topic description

Is the docker daemon running ?

Is your docker running?