Почему выдается ошибка на db.create_all()?

Question

[mezigar]

Пытаюсь запустить flask и postgresql в контейнере, но успешно запускается только postgresql, а flask падает с ошибкой:

Traceback (most recent call last):

  File "/app/app.py", line 12, in <module>

    db.create_all()

*Обновление* Вне докера тоже вылетает данная ошибка
Вот мои файлы:
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}"

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!'

config.py

import os

user = "tzuser"
password = "password"
host = "postgres"
database = "tzdb"
port = "5432"

DATABASE_CONNECTION_URI = f'postgresql+psycopg2://{user}:{password}@{host}:{port}/{database}'

Dockerfile

FROM python:3.10

WORKDIR /app
COPY . .

RUN pip install -r requirements.txt

ENTRYPOINT ["python"]
CMD ["app.py"]

docker-compose.yml

version: '3.9'
services:
  app:
    build:
      context: ./app
    ports:
      - 5000:5000
    volumes:
      - ./app:/app
  postgres:
    image: postgres:13.3
    healthcheck:
      test: [ "CMD", "pg_isready", "-q", "-d", "postgres", "-U", "tzuser" ]
      timeout: 45s
      interval: 10s
      retries: 10
    restart: always
    environment:
      POSTGRES_DB: tzdb
      POSTGRES_USER: tzuser
      POSTGRES_PASSWORD: password
    ports:
      - 5432:5432
    volumes:
      # - ./db.sql:/docker-entrypoint-initdb.d/db.sql
      # - ./postgres-data:/var/lib/postgresql/data
      - ./db-data/:/var/lib/postgresql/data/
        # - ./init.sql:/docker-entrypoint-initdb.d/init.sql