Django on Amazon Web Service (AWS)

I have read these tutorials : http://ift.tt/1uyhHt6 and http://ift.tt/1QLXiYn

I use Django 1.8.2 and it seems that the amazon's doc is a little bit outdated (they still used django-admin.py instead of django-admin), and some parts of it are not working (when stuff does not work, i fallback to the realpython link one).

So, I got it all working except my admin page does not load the static files. So, the css file is not loaded.

This is my settings.py :

STATIC_URL = '/static/'
STATIC_ROOT = os.path.join(os.path.dirname(__file__), 'static/')

i have also tried to use :

BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
STATIC_ROOT = os.path.join(BASE_DIR, 'static'). 

but it still does not work.

this is my eb config file :

container_commands:
  01_migrate:
    command: "source /opt/python/run/venv/bin/activate && python papp/manage.py migrate --noinput"
    leader_only: true
  02_createsuperuser:
    command: "source /opt/python/run/venv/bin/activate && python papp/manage.py createsu"
    leader_only: true
  03_collectstatic:
    command: "source /opt/python/run/venv/bin/activate && python papp/manage.py collectstatic --noinput"

  option_settings:
    "aws:elasticbeanstalk:application:environment":
      DJANGO_SETTINGS_MODULE: "papp.settings"
      PYTHONPATH: "/opt/python/current/app/papp:$PYTHONPATH"
    "aws:elasticbeanstalk:container:python":
      WSGIPath: "papp/papp/wsgi.py"
    "aws:elasticbeanstalk:container:python:staticfiles":
      "/static/": "static/"

I used eb deploy command after making the changes.

Is there extra steps that I need to do ? I have read in here : Default Django 1.5 admin css not working that i need to change alias, but it is for apache.

I also read from django doc files such as http://ift.tt/1EF8GkR but im not sure of what to put in the STATIC_ROOT for AWS

any help is much appreciated. Thanks