Added dockerfile

[roll]

No description provided.

[coveralls]

Coverage remained the same at 88.982% when pulling 7039925 on dockerfile into 27aff44 on master.

[roll]

@smth
@serahrono
Please take a look.

Esp. on the Dockerfile. I'm wondering is it enough commands to setup and run the app. Or we need more (like python manage.py collectstatic):

pip install -r requirements.txt
npm install -g bower
bower install --allow-root

python manage.py migrate && \
python manage.py update_index && \
gunicorn foundation.wsgi:application \ 
    --access-logfile '-' \ 
    --error-logfile '-'

It seems everything works OK using code from this PR:

• https://next.okfn.org
• https://okfn.org

[smth]

I'll have to defer to @serahrono on this one @roll