new_contents: import logging
  
  from django.conf import settings
  from kubernetes.client.rest import ApiException
  
  from constants.jobs import JobLifeCycle
  from scheduler.spawners.dockerizer_spawner import DockerizerSpawner
  from scheduler.spawners.utils import get_job_definition
  
  logger = logging.getLogger('polyaxon.scheduler.dockerizer')
  
  
  def start_dockerizer(build_job):
      spawner = DockerizerSpawner(
          project_name=build_job.project.unique_name,
          project_uuid=build_job.project.uuid.hex,
          job_name=build_job.unique_name,
          job_uuid=build_job.uuid.hex,
          k8s_config=settings.K8S_CONFIG,
          namespace=settings.K8S_NAMESPACE,
          in_cluster=True)
  
      try:
          results = spawner.start_dockerizer(commit=build_job.commit,
                                             resources=build_job.resources,
                                             node_selectors=build_job.node_selectors)
      except ApiException as e:
          logger.warning('Could not start build job, please check your polyaxon spec %s', e)
          build_job.set_status(
              JobLifeCycle.FAILED,
              message='Could not start build job, encountered a Kubernetes ApiException.')
          return
      except Exception as e:
          logger.warning('Could not start build job, please check your polyaxon spec %s', e)
          build_job.set_status(
              JobLifeCycle.FAILED,
              message='Could not start build job encountered an {} exception.'.format(
                  e.__class__.__name__
              ))
          return
      build_job.definition = get_job_definition(results)
      build_job.save()
  
  
  def stop_dockerizer(build_job, update_status=False):
      spawner = DockerizerSpawner(
          project_name=build_job.project.unique_name,
          project_uuid=build_job.project.uuid.hex,
          job_name=build_job.unique_name,
          job_uuid=build_job.uuid.hex,
          k8s_config=settings.K8S_CONFIG,
          namespace=settings.K8S_NAMESPACE,
          in_cluster=True)
  
      spawner.stop_dockerizer()
      if update_status:
          # Update experiment status to show that its stopped
          build_job.set_status(status=JobLifeCycle.STOPPED,
                               message='BuildJob was stopped')
  
subject: Add dockerizer scheduler