code: def _ecr_image_uri(account, region, image_name, tag):
      """Build an ECR image URI based in account, region and container name"""
      return "{}.dkr.ecr.{}.amazonaws.com/{}:{}".format(
          account, region, image_name, tag
      )
  
imports: from __future__ import absolute_import
  import base64
  import os
  import subprocess
  import shutil
  import pytest
  import docker
  import re
  import sys
  from docker.errors import BuildError
  from sagemaker.utils import sagemaker_timestamp, _tmpdir, sts_regional_endpoint
label_desc: Use image node_id 14 for calling a global function with example usage: _ecr_image_uri(account, region, image_name, tag) and returns: str