Use wsgi server for production

[fritterhoff]

At the moment the default flask server is used for production. It is best practice/recommended to use an wsgi server like Gunicorn for production.
As far as I know, the scheduler could cause some issues due to the fork modell of the server (depending on the individual solution).

[DerAlexmeister]

Does this solve the Problem mentioned in #24. Only the Extractor and the Sysmon should be exposed. @fritterhoff

[fritterhoff]

Does this solve the Problem mentioned in #24. @fritterhoff

Maybe it makes integrating the reverse proxy easier.

[fritterhoff]

In detail the problem comes from:

YAFRA/iocextractor/templates/index.html

Line 4 in 3e1f947

<link rel="stylesheet" href="/static/bootstrap/css/bootstrap.min.css">

Here you reference the static resources directly without any prefix. We should at least change that to

<link rel="stylesheet" href="{{ url_for('static', filename='bootstrap/css/bootstrap.min.css') }}">

[fritterhoff]

According to https://dlukes.github.io/flask-wsgi-url-prefix.html that should solve the problem in combination with the env var SCRIPT_NAME.