Added gunicorn

Dockerfile

@@ -4,10 +4,10 @@ WORKDIR /app
 
 COPY requirements.txt /app
 RUN pip3 install -r requirements.txt
-RUN apt-get update && apt-get install -y libevent-dev
+RUN apt-get update && apt-get install -y libevent-dev gcc
+
+RUN pip3 install gunicorn==21.2.0 gevent-websocket==0.10.1
 
 COPY . .
 
-ENV FLASK_APP=src/app.py
-
-CMD [ "python3", "-m" , "flask", "run", "--host=0.0.0.0", "--port=5000"]
+CMD ["gunicorn", "-b", "0.0.0.0:5000", "-k", "geventwebsocket.gunicorn.workers.GeventWebSocketWorker", "--workers", "1", "src.app:app"]

src/app.py

@@ -30,14 +30,9 @@ if db is not None:
 else:
     print('Failed to connect to MongoDB')
 
+def create_app():
+    return app
+
 if __name__ == '__main__':
     #app.run(debug=True)
-    #socketio.run(app, host=Config.APP_HOST, debug=False)
-    run_simple(
-        Config.APP_HOST, 
-        5000, 
-        socketio.run_handler(app),
-        use_reloader=False,
-        use_debugger=False,
-        use_evalex=False
-    )
+    socketio.run(app, host=Config.APP_HOST, debug=False)

src/infra/server.py

@@ -4,18 +4,4 @@ from flask_jwt_extended import JWTManager
 
 app = Flask(__name__)
 jwt = JWTManager(app)
-
-@app.before_request
-def handle_preflight():
-    if request.method == "OPTIONS":
-        response = app.make_default_options_response()
-        headers = {
-            'Access-Control-Allow-Origin': '*',
-            'Access-Control-Allow-Methods': 'GET, POST, PUT, DELETE, OPTIONS',
-            'Access-Control-Allow-Headers': 'Content-Type, Authorization'
-        }
-        for k, v in headers.items():
-            response.headers[k] = v
-        return response
-
 socketio = SocketIO(app, async_mode='gevent', cors_allowed_origins="*")