Google Cloud Run上的Python会话自动注销

我在Google Cloud Run上运行一个我用Python编写的网站。该站点在Docker镜像中运行,该镜像使用 python:latest 。代码是有效的,但是过了一段时间用户就注销了,我不知道为什么会话不能持续。

main.py:

"""
Main
File: main.py
Updated: 23.10.2022 Ditlefsen
"""
import os

import flask
from flask import request, session

# Flask
app = flask.Flask(__name__)
app.secret_key = os.urandom(12)


# - Index ------------------------------------------------------------------------------
@app.route('/', methods=['GET', 'POST'])
def __index():

    # Login user
    if not session.get('logged_in'):
        request_form_global = request.form

        inp_username = request_form_global['inp_username']
        inp_password = request_form_global['inp_password']
        
        if inp_username == "hello" and inp_password == "world":
            session['logged_in'] = True
            

    if session.get('logged_in'):
        return "Welcome to the website", 200
    else:
        return "Access denied!", 304


# - Main ----------------------------------------------------------------------
def main(function_request: flask.wrappers.Request = None):
    app.run(debug=False, host="0.0.0.0", port=8080)

if __name__ == '__main__':
    main()

Dockerfile:

# Specify Python
FROM python:latest

ENV PYTHONDONTWRITEBYTECODE 1
ENV PYTHONUNBUFFERED 1

# Open port
EXPOSE 8080

# Add Python script
RUN mkdir /app
WORKDIR /app
COPY . .


# Install dependencies
RUN pip install -r requirements.txt

# Set Pythons path
ENV PYTHONPATH /app

# Run script
CMD [ "python", "./main.py" ]

requirements.txt:

cloud-sql-python-connector
flask
flask-cors
google-cloud-secret-manager
google
google-api-python-client
PyYAML
psycopg2-binary
pg8000
sqlalchemy==1.4.46
requests



flask-login
passlib
Werkzeug

如何保持用户登录?