跟着[GitHub][1]的lab学习了更多关于Docker容器的知识，感觉有这个问题：
No matching distribution found for Flask==0.10.1 (from -r /usr/src/app/requirements.txt (line 1))
Could not fetch URL https://pypi.python.org/simple/flask/: There was a problem confirming the ssl certificate: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:726) - skipping```
[1]: https://github.com/docker/labs/blob/master/beginner/chapters/webapps.md