我正在使用macOS，用Postgres构建一个Django应用程序，我想用Docker容器化它。
我有以下文件：
Dockerfile：

FROM python:3.11
WORKDIR /medicin_api
COPY requirements.txt .
RUN pip install -r requirements.txt
COPY . .
CMD ["python3", "./manage.py", "runserver", "8001"]

字符串
docker-compose.yaml:

version: latest
services:
  db_api:
    image: postgres:16
    restart: always
    container_name: db_api
    ports:
      - "5433:5433"
    environment:
      - POSTGRES_USER=api_user
      - POSTGRES_DB=medicin_patients
      - POSTGRES_PASSWORD=Baz#Dan&Api!
    volumes:
      - postgres:/data/postgres
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U api_user -d medicin_patients"]
      interval: 5s
      timeout: 2s
      retries: 10

  api:
    container_name: api
    build: .
    command: python manage.py runserver 0.0.0.0:8001
    volumes:
      - .:/api_volume
    ports:
      - "8001:8001"
    depends_on:
      db_api:
        condition: service_healthy

volumes:
  postgres:

型
在django settings.py中设置PostgreSQL：

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.postgresql',
        'NAME': 'medicin_patients',
        'USER': 'api_user',
        'PASSWORD': 'Baz#Dan&Api!',
        'HOST': 'db_api',
        'PORT': '5433'
    }
}

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当我运行命令：docker-compose up -d --build时，我得到了两个图像和容器，其中：

• db_api容器与PostgreSQL数据库一起正常运行，我可以通过CLI访问它
• api容器正在运行，但它抛出了下面的错误，我无法解决：

2023-12-10 12:32:25 Watching for file changes with StatReloader
2023-12-10 12:32:25 Exception in thread django-main-thread:
2023-12-10 12:32:25 Traceback (most recent call last):
2023-12-10 12:32:25   File "/usr/local/lib/python3.11/site-packages/django/db/backends/base/base.py", line 275, in ensure_connection
2023-12-10 12:32:25     self.connect()
2023-12-10 12:32:25   File "/usr/local/lib/python3.11/site-packages/django/utils/asyncio.py", line 26, in inner
2023-12-10 12:32:25     return func(*args, **kwargs)
2023-12-10 12:32:25            ^^^^^^^^^^^^^^^^^^^^^
2023-12-10 12:32:25   File "/usr/local/lib/python3.11/site-packages/django/db/backends/base/base.py", line 256, in connect
2023-12-10 12:32:25     self.connection = self.get_new_connection(conn_params)
2023-12-10 12:32:25                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2023-12-10 12:32:25   File "/usr/local/lib/python3.11/site-packages/django/utils/asyncio.py", line 26, in inner
2023-12-10 12:32:25     return func(*args, **kwargs)
2023-12-10 12:32:25            ^^^^^^^^^^^^^^^^^^^^^
2023-12-10 12:32:25   File "/usr/local/lib/python3.11/site-packages/django/db/backends/postgresql/base.py", line 275, in get_new_connection
2023-12-10 12:32:25     connection = self.Database.connect(**conn_params)
2023-12-10 12:32:25                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2023-12-10 12:32:25   File "/usr/local/lib/python3.11/site-packages/psycopg/connection.py", line 745, in connect
2023-12-10 12:32:25     raise last_ex.with_traceback(None)
2023-12-10 12:32:25 psycopg.OperationalError: connection failed: Connection refused
2023-12-10 12:32:25     Is the server running on that host and accepting TCP/IP connections?

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我在这里错过了什么，或者错误地设置了我的Django应用程序没有连接到PostgreSQL？