docker daemon

Usage: docker [OPTIONS] COMMAND [arg...]
       docker daemon [arg...]
       docker [ -h | --help | -v | --version ]

A self-sufficient runtime for containers.

Options:
  --config=~/.docker              Location of client config files
  -D, --debug=false               Enable debug mode
  -H, --host=[]                   Daemon socket(s) to connect to
  -l, --log-level=info            Set the logging level
  --tls=false                     Use TLS; implied by --tlsverify
  --tlscacert=~/.docker/ca.pem    Trust certs signed only by this CA
  --tlscert=~/.docker/cert.pem    Path to TLS certificate file
  --tlskey=~/.docker/key.pem      Path to TLS key file
  --tlsverify=false               Use TLS and verify the remote

Commands:
    attach    Attach to a running container
    build     Build an image from a Dockerfile
    commit    Create a new image from a container's changes
    cp        Copy files/folders from a container to a HOSTDIR or to STDOUT
    create    Create a new container
    diff      Inspect changes on a container's filesystem
...

Notice no 'daemon' command