code: def _get_docker_image_uri(repository_uri, work_dir):
      """
      Returns an appropriate Docker image URI for a project based on the git hash of the specified
      working directory.
  
      :param repository_uri: The URI of the Docker repository with which to tag the image. The
                             repository URI is used as the prefix of the image URI.
      :param work_dir: Path to the working directory in which to search for a git commit hash
      """
      repository_uri = (
          repository_uri if repository_uri else "docker-project"
      )
      # Optionally include first 7 digits of git SHA in tag name, if available.
      git_commit = get_git_commit(work_dir)
      version_string = ":" + git_commit[:7] if git_commit else ""
      return repository_uri + version_string
  
imports: import logging
  import os
  import posixpath
  import shutil
  import subprocess
  import tempfile
  import urllib.parse
  import urllib.request
  import docker
  from mlflow import tracking
  from mlflow.environment_variables import MLFLOW_TRACKING_URI
  from mlflow.exceptions import ExecutionException
  from mlflow.projects.utils import MLFLOW_DOCKER_WORKDIR_PATH
  from mlflow.utils import file_utils, process
  from mlflow.utils.databricks_utils import get_databricks_env_vars
  from mlflow.utils.file_utils import _handle_readonly_on_windows
  from mlflow.utils.git_utils import get_git_commit
  from mlflow.utils.mlflow_tags import MLFLOW_DOCKER_IMAGE_ID, MLFLOW_DOCKER_IMAGE_URI
label_desc: Use image node_id 4 for calling a global function with example usage: _get_docker_image_uri(repository_uri, work_dir) and returns: unknown