class_docstr: Base class for all submissions.
docstr: Returns appropriate Docker binary to use.
docstr_tok: ["Returns","appropriate","Docker","binary","to","use","."]
code: def docker_binary(self):
      """Returns appropriate Docker binary to use."""
      return "nvidia-docker" if self.use_gpu else "docker"
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import argparse
  import csv
  import json
  import os
  import subprocess
  import numpy
  from PIL import Image
label_desc: Use image node_id 2 for calling the Submission obj's underlying member method code with example usage: obj.docker_binary() and returns: unknown