Django allauth OSError：[Errno 99]地址不可用

我正在尝试实现django-allauth，遇到了这个问题。对于这个项目，我也使用Docker。当我单击“使用VK注册”时，它会将我重定向到http://127.0.0.1:8000/accounts/vk/login/callback/?code=...random code...，并出现此错误。再次注册页面并单击相同的按钮后，它成功地将我重定向到个人资料页面，这意味着用户已创建。我无法使用Google找到任何解决方案，因此希望您能提供帮助。
我不认为这是因为糟糕的配置，因为我在没有容器化的空django项目上测试过类似的配置，一切都正常工作。也许是因为在docker容器中安装了venv。
回溯：

Environment:

Request Method: GET
Request URL: http://127.0.0.1:8000/accounts/vk/login/callback/?code=5d6083ab180253fa42&state=JDhRkbbzqV2m

Django Version: 3.2.8
Python Version: 3.9.7
Installed Applications:
['django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'django.contrib.sites',
 'coreapp',
 'crispy_forms',
 'rest_framework',
 'corsheaders',
 'easy_thumbnails',
 'django_cleanup',
 'storages',
 'allauth',
 'allauth.account',
 'allauth.socialaccount',
 'allauth.socialaccount.providers.vk']
Installed Middleware:
['whitenoise.middleware.WhiteNoiseMiddleware',
 'django.middleware.security.SecurityMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'corsheaders.middleware.CorsMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware']


Traceback (most recent call last):
  File "/py/lib/python3.9/site-packages/django/core/handlers/exception.py", line 47, in inner
    response = get_response(request)
  File "/py/lib/python3.9/site-packages/django/core/handlers/base.py", line 181, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/py/lib/python3.9/site-packages/allauth/socialaccount/providers/oauth2/views.py", line 77, in view
    return self.dispatch(request, *args, **kwargs)
  File "/py/lib/python3.9/site-packages/allauth/socialaccount/providers/oauth2/views.py", line 147, in dispatch
    return complete_social_login(request, login)
  File "/py/lib/python3.9/site-packages/allauth/socialaccount/helpers.py", line 151, in complete_social_login
    return _complete_social_login(request, sociallogin)
  File "/py/lib/python3.9/site-packages/allauth/socialaccount/helpers.py", line 172, in _complete_social_login
    ret = _process_signup(request, sociallogin)
  File "/py/lib/python3.9/site-packages/allauth/socialaccount/helpers.py", line 43, in _process_signup
    ret = complete_social_signup(request, sociallogin)
  File "/py/lib/python3.9/site-packages/allauth/socialaccount/helpers.py", line 177, in complete_social_signup
    return complete_signup(
  File "/py/lib/python3.9/site-packages/allauth/account/utils.py", line 209, in complete_signup
    return perform_login(
  File "/py/lib/python3.9/site-packages/allauth/account/utils.py", line 172, in perform_login
    send_email_confirmation(request, user, signup=signup, email=email)
  File "/py/lib/python3.9/site-packages/allauth/account/utils.py", line 346, in send_email_confirmation
    email_address.send_confirmation(request, signup=signup)
  File "/py/lib/python3.9/site-packages/allauth/account/models.py", line 62, in send_confirmation
    confirmation.send(request, signup=signup)
  File "/py/lib/python3.9/site-packages/allauth/account/models.py", line 169, in send
    get_adapter(request).send_confirmation_mail(request, self, signup)
  File "/py/lib/python3.9/site-packages/allauth/account/adapter.py", line 464, in send_confirmation_mail
    self.send_mail(email_template, emailconfirmation.email_address.email, ctx)
  File "/py/lib/python3.9/site-packages/allauth/account/adapter.py", line 136, in send_mail
    msg.send()
  File "/py/lib/python3.9/site-packages/django/core/mail/message.py", line 284, in send
    return self.get_connection(fail_silently).send_messages([self])
  File "/py/lib/python3.9/site-packages/django/core/mail/backends/smtp.py", line 102, in send_messages
    new_conn_created = self.open()
  File "/py/lib/python3.9/site-packages/django/core/mail/backends/smtp.py", line 62, in open
    self.connection = self.connection_class(self.host, self.port, **connection_params)
  File "/usr/local/lib/python3.9/smtplib.py", line 255, in __init__
    (code, msg) = self.connect(host, port)
  File "/usr/local/lib/python3.9/smtplib.py", line 341, in connect
    self.sock = self._get_socket(host, port, self.timeout)
  File "/usr/local/lib/python3.9/smtplib.py", line 312, in _get_socket
    return socket.create_connection((host, port), timeout,
  File "/usr/local/lib/python3.9/socket.py", line 844, in create_connection
    raise err
  File "/usr/local/lib/python3.9/socket.py", line 832, in create_connection
    sock.connect(sa)

Exception Type: OSError at /accounts/vk/login/callback/
Exception Value: [Errno 99] Address not available

settings.py:

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',

    'django.contrib.sites',

    # Custom apps
    'coreapp',
    'crispy_forms',
    'rest_framework',
    'corsheaders',
    'easy_thumbnails',
    'django_cleanup',
    'storages',

    'allauth',
    'allauth.account',
    'allauth.socialaccount',
    'allauth.socialaccount.providers.vk',
]

SITE_ID = 1

AUTHENTICATION_BACKENDS = (
    'django.contrib.auth.backends.ModelBackend',
    'allauth.account.auth_backends.AuthenticationBackend',
)

SOCIALACCOUNT_PROVIDERS = {
    "vk": {
        "APP": {
            "client_id": int(os.environ.get('VK_OAUTH2_ID')),
            "secret": os.environ.get('VK_OAUTH2_SECRET'),
        },
        "SCOPE": {
            "profile",
            "email",
        },
    },
}

在我使用的登录模板中：

{% load socialaccount %}
<a href="{% provider_login_url "vk" method="oauth2" %}"> Sign up using VK </a>

Dockerfile：

FROM python:3.9-alpine3.13

ENV PYTHONUNBUFFERED 1

COPY ./requirements.txt /requirements.txt
COPY ./placerem /placerem
COPY ./scripts /scripts

WORKDIR /placerem

# Installing npm packages
RUN apk add --update --no-cache nodejs npm && \
    npm ci

RUN python -m venv /py && \
    /py/bin/pip install --upgrade pip && \
    apk add --update --no-cache postgresql-client && \
    apk add --update --no-cache --virtual .tmp-deps \
        build-base jpeg-dev postgresql-dev musl-dev linux-headers \
        zlib-dev libffi-dev openssl-dev python3-dev cargo && \
    apk add --update --no-cache libjpeg && \
    /py/bin/pip install -r /requirements.txt && \
    apk del .tmp-deps && \
    adduser --disabled-password --no-create-home placerem && \
    mkdir -p /vol/web/static && \
    mkdir -p /vol/web/media && \
    chown -R placerem:placerem /vol && \
    # Or you'll get permission denied error
    chown -R placerem:placerem /py/lib/python3.9/site-packages && \
    chown -R placerem:placerem package.json && \
    chmod -R +x /scripts

ENV PATH="/scripts:/py/bin:/py/lib:$PATH"

USER placerem

CMD ["run.sh"]

Django allauth OSError：[Errno 99]地址不可用

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