TLS error when building Paddle using Docker image

[wangkuiyi]

When I do

docker run --rm     \
   -v $(git rev-parse --show-toplevel):/paddle \
        -e "WITH_GPU=OFF" \
        -e "WITH_AVX=ON" \
       -e "WITH_DOC=OFF"  paddledev/paddle:dev

The last step outputs error messages as follows:

running install_egg_info
running egg_info
writing /paddle/python/paddle.egg-info/PKG-INFO
writing top-level names to /paddle/python/paddle.egg-info/top_level.txt
writing dependency_links to /paddle/python/paddle.egg-info/dependency_links.txt
reading manifest file '/paddle/python/paddle.egg-info/SOURCES.txt'
writing manifest file '/paddle/python/paddle.egg-info/SOURCES.txt'
Copying /paddle/python/paddle.egg-info to build/bdist.linux-x86_64/wheel/paddle-0.10.0rc4-py2.7.egg-info
running install_scripts
creating build/bdist.linux-x86_64/wheel/paddle-0.10.0rc4.dist-info/WHEEL
[ 99%] Built target paddle_python
[100%] Built target protobuf_equal
Install the project...
-- Install configuration: "Release"
-- Installing: /usr/local/opt/paddle/bin/paddle_pserver_main
-- Installing: /usr/local/opt/paddle/bin/paddle_trainer
-- Installing: /usr/local/opt/paddle/bin/paddle_merge_model
-- Installing: /usr/local/bin/paddle
-- Installing: /usr/local/opt/paddle/bin/paddle_usage
-- Installing: /usr/local/opt/paddle/share/wheels
-- Installing: /usr/local/opt/paddle/share/wheels/.timestamp
-- Installing: /usr/local/opt/paddle/share/wheels/py_paddle-0.10.0rc4-py2-none-any.whl
-- Installing: /usr/local/opt/paddle/share/wheels/py_paddle-0.9.0a0-cp27-none-linux_x86_64.whl
-- Up-to-date: /usr/local/opt/paddle/share/wheels
-- Installing: /usr/local/opt/paddle/share/wheels/paddle-0.10.0rc4-py2-none-any.whl
Double requirement given: py-paddle==0.9.0a0 from file:///usr/local/opt/paddle/share/wheels/py_paddle-0.9.0a0-cp27-none-linux_x86_64.whl (already in py-paddle==0.10.0rc4 from file:///usr/local/opt/paddle/share/wheels/py_paddle-0.10.0rc4-py2-none-any.whl, name='py-paddle')
/usr/local/lib/python2.7/dist-packages/pip/_vendor/requests/packages/urllib3/util/ssl_.py:318: SNIMissingWarning: An HTTPS request has been made, but the SNI (Subject Name Indication) extension to TLS is not available on this platform. This may cause the server to present an incorrect TLS certificate, which can cause validation failures. You can upgrade to a newer version of Python to solve this. For more information, see https://urllib3.readthedocs.io/en/latest/security.html#snimissingwarning.
  SNIMissingWarning
/usr/local/lib/python2.7/dist-packages/pip/_vendor/requests/packages/urllib3/util/ssl_.py:122: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. You can upgrade to a newer version of Python to solve this. For more information, see https://urllib3.readthedocs.io/en/latest/security.html#insecureplatformwarning.
  InsecurePlatformWarning