python - Alpine 3.3、Python 2.7.11、urllib2 导致 SSL : CERTIFICATE_VERIFY_FAILED

Question

我有这个小 Dockerfile

FROM alpine:3.3
RUN apk --update add python
CMD ["python", "-c", "import urllib2; response = urllib2.urlopen('https://www.python.org')"]

使用 docker build -t alpine-py/01 . 构建它，然后使用 docker run -it --rm alpine-py/01 运行它创建以下内容输出

Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/usr/lib/python2.7/urllib2.py", line 154, in urlopen
    return opener.open(url, data, timeout)
  File "/usr/lib/python2.7/urllib2.py", line 431, in open
    response = self._open(req, data)
  File "/usr/lib/python2.7/urllib2.py", line 449, in _open
    '_open', req)
  File "/usr/lib/python2.7/urllib2.py", line 409, in _call_chain
    result = func(*args)
  File "/usr/lib/python2.7/urllib2.py", line 1240, in https_open
    context=self._context)
  File "/usr/lib/python2.7/urllib2.py", line 1197, in do_open
    raise URLError(err)
urllib2.URLError: <urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:590)>

昨天我被最近发布的 OpenSSL 1.0.2g 咬伤了，导致 py-cryptograpy 无法编译。幸运的是，几个小时后，来自 py-cryptography 的人在 PyPI 上发布了一个新版本。问题是 OpenSSL 中的函数获得了新签名。

这可能是相关的还是我遗漏了什么？

Answer 1

您需要安装 ca-certificates 才能验证公共(public) CA 签名的证书:

FROM alpine:3.3
RUN apk --no-cache add python ca-certificates
CMD ["python", "-c", "import urllib2; response = urllib2.urlopen('https://www.python.org')"]