How to fix error in db.create_all() in docker?

Question

Trying to launch postgres and flask in docker. Postgres is working ok as i see. But flask is cancelling to work properly The head of log is here:

 Traceback (most recent call last):

   File "/app/app.py", line 12, in <module>
   db.create_all()

   File "/usr/local/lib/python3.10/site-packages/flask_sqlalchemy/__init__.py", line 1094, in create_all
   self._execute_for_all_tables(app, bind, 'create_all')

There are models.py

from datetime import datetime

import flask_sqlalchemy

db = flask_sqlalchemy.SQLAlchemy()


class Quiz(db.Model):
    __tablename__ = 'quiz'
    id = db.Column(db.Integer, primary_key=True)
    question = db.Column(db.String(255))
    answer = db.Column(db.String(100))
    created = db.Column(db.DateTime, default=datetime.utcnow)

    def __repr__(self):
        return f"id: {self.id}, answer: {self.answer}, created: {self.created}"

and app.py

import json
from flask import Flask, request

from models import db
import config

app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = config.DATABASE_CONNECTION_URI
app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
app.app_context().push()
db.init_app(app)
db.create_all()


# @app.route('/', methods=['GET'])
@app.route('/')
def hello_world():
    return 'Flask Dockerized!'