old_contents: config = dict(    
      port='8025',
      app_dir='tracpro',
      friendly_name='TracPro',
      repository='ssh://git@github.com/rapidpro/trac.git',
      domain='tracpro.io',
      name='tracpro',
      repo='tracpro',
      user='tracpro',
      env='env',
      settings='settings.py.dev',
      dbms='psql',
      db='trac',
      custom_domains='*.tracpro.io tracpro.io tracpro.staging.nyaruka.com *.tracpro.staging.nyaruka.com',
      prod_host='trac1',
      sqldump=False,
      celery=(),
      compress=True,
  )
  
new_contents: config = dict(    
      port='8027',
      app_dir='tracpro',
      friendly_name='TracPro',
      repository='ssh://git@github.com/rapidpro/trac.git',
      domain='tracpro.io',
      name='tracpro',
      repo='tracpro',
      user='tracpro',
      env='env',
      settings='settings.py.dev',
      dbms='psql',
      db='trac',
      custom_domains='*.tracpro.io tracpro.io tracpro.staging.nyaruka.com *.tracpro.staging.nyaruka.com',
      prod_host='trac1',
      sqldump=False,
      celery=(),
      compress=True,
  )
  
subject: update gunicorn port