Replace Werkzeug with Bjoern as underlying WSGI server (#672)

environments/python/Dockerfile

@@ -1,7 +1,7 @@
 FROM alpine:3.5
 
 RUN apk update
-RUN apk add --no-cache python3 python3-dev build-base
+RUN apk add --no-cache python3 python3-dev build-base libev-dev
 RUN pip3 install --upgrade pip
 RUN rm -r /root/.cache
 

environments/python/Dockerfile-2.7

@@ -1,7 +1,7 @@
 FROM alpine:3.5
 
 RUN apk update
-RUN apk add --no-cache python python-dev build-base py-pip
+RUN apk add --no-cache python python-dev build-base py-pip libev-dev
 RUN pip install --upgrade pip
 RUN rm -r /root/.cache
 

environments/python/requirements.txt

@@ -1,4 +1,5 @@
 Flask===0.11.1
+bjoern
 httplib2
 python-dateutil
 requests==2.7.0

environments/python/server.py

@@ -4,6 +4,7 @@ import logging
 import sys
 import imp
 import os
+import bjoern
 
 from flask import Flask, request, abort, g
 
@@ -99,4 +100,4 @@ def setup_logger(loglevel):
 #
 setup_logger(logging.DEBUG)
 app.logger.info("Starting server")
-app.run(host='0.0.0.0', port=8888)
+bjoern.run(app, '0.0.0.0', 8888, reuse_port=True)