docs: function() {
  
      // Whitelist this in windows for now
      return bin.sh([DOCKER_EXECUTABLE, 'info'], {mode: 'collect'})
  
      // Return true if we get a zero response
      .then(function() {
        log.debug('Engine is up.');
        return Promise.resolve(true);
      })
  
      // Return false if we get a non-zero response
      .catch(function() {
        log.debug('Engine is down.');
        return Promise.resolve(false);
      });
  
    }