old_contents: import os
  import multiprocessing
  
  proc_name = 'gunicorn: {}'.format(os.environ['HOSTNAME'])
  user      = 'www-data'
  group     = 'www-data'
  bind      = '0.0.0.0:80'
  workers   = multiprocessing.cpu_count() * 2 + 1
  threads   = workers
  
new_contents: import os
  import multiprocessing
  
  proc_name = 'gunicorn: {}'.format(os.environ['WEB_HOSTNAME'])
  user      = 'www-data'
  group     = 'www-data'
  bind      = '0.0.0.0:80'
  workers   = multiprocessing.cpu_count() * 2 + 1
  threads   = workers
  
subject: Add gunicorn.conf.py