我的flask app有问题
具有以下前提：
Python、Flask、Celerey、MongoDB、RabbitMQ。
当我向API发出请求时，我会得到以下返回：
错误：[Errno 111]连接被拒绝
这只会发生在我运行docker-compose up的时候，如果我尝试在docker之外从flask启动应用程序，一切正常。
Dockerfile：

FROM python:3.11-alpine AS builder

RUN pip install poetry

WORKDIR /backend

COPY pyproject.toml poetry.lock ./

RUN poetry config virtualenvs.create false && poetry install --no-root

FROM python:3.11-alpine

WORKDIR /backend

COPY --from=builder /usr/local/lib/python3.11/site-packages/ /usr/local/lib/python3.11/site-packages/
COPY --from=builder /usr/local/bin/ /usr/local/bin/

COPY . .

字符串
docker-compose.yml

version: '3.9'
services:
  mongodb:
    image: mongo:latest
    container_name: mongodb
    environment:
      - MONGO_INITDB_ROOT_USERNAME=admin
      - MONGO_INITDB_ROOT_PASSWORD=admin
    restart: always
    ports:
      - 27017:27017
    volumes:
      - mongodb_data:/data/db

  rabbitmq:
    image: rabbitmq:3-management
    container_name: rabbitmq
    restart: always
    environment:
      - RABBITMQ_DEFAULT_USER=admin
      - RABBITMQ_DEFAULT_PASS=admin
      - RABBITMQ_DEFAULT_VHOST=/
    ports:
      - 5672:5672
      - 15672:15672
    volumes:
      - rabbitmq_data:/var/lib/rabbitmq

  celery_worker:
    build: .
    container_name: celery_worker
    environment:
      - CELERY_BROKER_URL=amqp://admin:admin@rabbitmq:5672/
    restart: always
    command: celery --app src.task worker --loglevel=info 
    depends_on:
      - mongodb
      - rabbitmq
      
  flask_app:
    build: .
    container_name: flask_app
    command: python src/app.py
    restart: always
    environment:
      - SERVER_HOST=0.0.0.0
      - SERVER_PORT=8080
    ports:
      - 5000:8080
    depends_on:
      - mongodb
      - rabbitmq
      - celery_worker
volumes:
  mongodb_data:  # Volume para persistência dos dados do MongoDB
  rabbitmq_data: # Volume para persistência dos dados do RabbitMQ

型
网址：app.py

import os
from flask import Flask
from task import add

app = Flask(__name__)

@app.route('/', methods=['GET'])
def hello():
    add.delay(1, 2)
    return "Docker compose working!"

if __name__ == '__main__':
    host = os.environ.get('SERVER_HOST', 'localhost')
    port = os.environ.get('SERVER_PORT', '8001')
    print(f"Server listenning {host}:{port} !!!")
    app.run(host=host, port=port, debug=True)

型
网址：task.py

import os 
from celery import Celery

broker = os.environ.get('CELERY_BROKER_URL', 'amqp://guest@localhost//')
celery = Celery('tasks')

@celery.task(queue='default')
def add(x, y):
    print(f'Adding {x} + {y}')
    return x + y

型
有谁能告诉我怎么解决这个问题吗？谢谢！