code: def setup_ssh_tunnel(job_id, local_port, remote_port):
      
      cmd = ['dx', 'ssh', '--suppress-running-check', job_id, '-o', 'StrictHostKeyChecking no']
      cmd += ['-f', '-L', '{0}:localhost:{1}'.format(local_port, remote_port), '-N']
      subprocess.check_call(cmd)
docs: Setup an ssh tunnel to the given job-id.  This will establish
      the port over the given local_port to the given remote_port
      and then exit, keeping the tunnel in place until the job is
      terminated.