问OSError：[Errno 99]无法分配请求的地址: flask、python和docker

EN

FROM python:3.8-buster

RUN apt-get update
RUN apt-get install -y git

RUN apt-get install -y \
        apt-transport-https \
        ca-certificates \
        curl \
        gnupg2 \
        software-properties-common
COPY requirements.txt /app/requirements.txt
WORKDIR /app

RUN pip3 install -r requirements.txt

COPY . /app

CMD celery -A webapp.app.celery worker  --loglevel=DEBUG
CMD export FLASK_APP=wsgi.py

EXPOSE 80

ENTRYPOINT [ "python" ]

CMD [ "webapp/app.py" ]

Traceback (most recent call last):
  File "/usr/local/lib/python3.8/urllib/request.py", line 1354, in do_open
    h.request(req.get_method(), req.selector, req.data, headers,
  File "/usr/local/lib/python3.8/http/client.py", line 1252, in request
    self._send_request(method, url, body, headers, encode_chunked)
  File "/usr/local/lib/python3.8/http/client.py", line 1298, in _send_request
    self.endheaders(body, encode_chunked=encode_chunked)
  File "/usr/local/lib/python3.8/http/client.py", line 1247, in endheaders
    self._send_output(message_body, encode_chunked=encode_chunked)
  File "/usr/local/lib/python3.8/http/client.py", line 1007, in _send_output
    self.send(msg)
  File "/usr/local/lib/python3.8/http/client.py", line 947, in send
    self.connect()
  File "/usr/local/lib/python3.8/http/client.py", line 918, in connect
    self.sock = self._create_connection(
  File "/usr/local/lib/python3.8/socket.py", line 808, in create_connection
    raise err
  File "/usr/local/lib/python3.8/socket.py", line 796, in create_connection
    sock.connect(sa)
OSError: [Errno 99] Cannot assign requested address

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "webapp/app.py", line 16, in <module>
    AUTHORS = gd.get(what="author", name="all")
  File "/usr/local/lib/python3.8/site-packages/dhtk/extensions/gutenberg/__init__.py", line 98, in get
    response = self.wrapper.all_authors()
  File "/usr/local/lib/python3.8/site-packages/dhtk/extensions/gutenberg/api/data.py", line 387, in all_authors
    return [result["author"] for result in self._get_query_results(query)]
  File "/usr/local/lib/python3.8/site-packages/dhtk/extensions/gutenberg/api/data.py", line 789, in _get_query_results
    query_results = sparql.queryAndConvert()
  File "/usr/local/lib/python3.8/site-packages/SPARQLWrapper/Wrapper.py", line 1114, in queryAndConvert
    res = self.query()
  File "/usr/local/lib/python3.8/site-packages/SPARQLWrapper/Wrapper.py", line 1107, in query
    return QueryResult(self._query())
  File "/usr/local/lib/python3.8/site-packages/SPARQLWrapper/Wrapper.py", line 1073, in _query
    response = urlopener(request)
  File "/usr/local/lib/python3.8/urllib/request.py", line 222, in urlopen
    return opener.open(url, data, timeout)
  File "/usr/local/lib/python3.8/urllib/request.py", line 525, in open
    response = self._open(req, data)
  File "/usr/local/lib/python3.8/urllib/request.py", line 542, in _open
    result = self._call_chain(self.handle_open, protocol, protocol +
  File "/usr/local/lib/python3.8/urllib/request.py", line 502, in _call_chain
    result = func(*args)
  File "/usr/local/lib/python3.8/urllib/request.py", line 1383, in http_open
    return self.do_open(http.client.HTTPConnection, req)
  File "/usr/local/lib/python3.8/urllib/request.py", line 1357, in do_open
    raise URLError(err)
urllib.error.URLError: <urlopen error [Errno 99] Cannot assign requested address>

if __name__ == '__main__':
    app.run(host='0.0.0.0', port=80)