code: def environment_variables_for_task(task):
      
      env = {
          'CI': 'frigg',
          'FRIGG': 'true',
          'FRIGG_CI': 'true',
          'GH_TOKEN': task['gh_token'],
          'FRIGG_BUILD_BRANCH': task['branch'],
          'FRIGG_BUILD_COMMIT_HASH': task['sha'],
          'FRIGG_BUILD_DIR': '~/builds/{0}'.format(task['id']),
          'FRIGG_BUILD_ID': task['id'],
          'FRIGG_DOCKER_IMAGE': task['image'],
          'FRIGG_WORKER': socket.getfqdn(),
      }
  
      if 'pull_request_id' in task:
          env['FRIGG_PULL_REQUEST_ID'] = task['pull_request_id']
  
      if 'build_number' in task:
          env['FRIGG_BUILD_NUMBER'] = task['build_number']
  
      if 'secrets' in task:
          env.update(task['secrets'])
  
      if 'environment_variables' in task:
          env.update(task['environment_variables'])
  
      return env
docs: This will build a dict with all the environment variables that
      should be present when running a build or deployment.
  
      :param task: A dict of the json payload with information about
                   the build task.
      :return: A dict of environment variables.