如何在docker中共享本地Postgres数据库？

这个问题已经有了答案:

从Docker容器内部，如何连接到机器的本地主机?

我有一个Django项目，使用PostgreSQL数据库。我需要在Docker容器中使用我的本地数据库。如何与Docker容器共享机器的本地主机? 我的docker-compose.yml:

  version: '3'
  services:
    web:
      build: ./
      network_mode: "host"
      command: bash -c "python manage.py makemigrations && python manage.py migrate && python manage.py collectstatic --noinput --i rest_framework && gunicorn orion-amr.wsgi:application --bind 0.0.0.0:8000 --workers=2"
      ports:
        - "${webport}:8000"
        - "${pgport}:${pgport}"
      env_file:
        - ./.env

Django的settings.py:

DATABASES = {
    'default': {
        'ENGINE': 'django.contrib.gis.db.backends.postgis',
        'NAME': os.environ.get('pgdatabase'),
        'USER': os.environ.get('pguser'),
        'PASSWORD': os.environ.get('pgpassword'),
        'HOST': os.environ.get('pghostname'),
        'PORT': os.environ.get('pgport'),
    }
}

我添加了

listen_addresses = '*'  

到postgresql.conf文件中，下面是我的pg_hba.conf文件:

# TYPE  DATABASE        USER            ADDRESS                 METHOD
# IPv4 local connections:
host    all             all             0.0.0.0/0               trust
# IPv6 local connections:
host    all             all             ::/0                    trust
# Allow replication connections from localhost, by a user with the
# replication privilege.
host    replication     all             127.0.0.1/32            trust
host    replication     all             ::1/128                 trust

现在我出现了一个错误:

web_1  | django.db.utils.OperationalError: could not connect to server: Connection refused
web_1  |        Is the server running on host "127.0.0.1" and accepting
web_1  |        TCP/IP connections on port 5432?
web_1  |

谁能帮我? 请!