bpo-10496 Runing Inside docker container from non root user raises KeyError

[Cinerar]

When i try to run youtube-dl inside docker container from non root user i recieve this error:

failed to import the site module traceback (most recent call last): file "/usr/lib/python3.6/site.py", line 544, in main() file "/usr/lib/python3.6/site.py", line 530, in main known_paths = addusersitepackages(known_paths) file "/usr/lib/python3.6/site.py", line 282, in addusersitepackages user_site = getusersitepackages() file "/usr/lib/python3.6/site.py", line 258, in getusersitepackages user_base = getuserbase() # this will also set user_base file "/usr/lib/python3.6/site.py", line 248, in getuserbase user_base = get_config_var('userbase') file "/usr/lib/python3.6/sysconfig.py", line 601, in get_config_var return get_config_vars().get(name) file "/usr/lib/python3.6/sysconfig.py", line 558, in get_config_vars _config_vars['userbase'] = _getuserbase() file "/usr/lib/python3.6/sysconfig.py", line 205, in _getuserbase return joinuser("~", ".local") file "/usr/lib/python3.6/sysconfig.py", line 184, in joinuser return os.path.expanduser(os.path.join(*args)) file "/usr/lib/python3.6/posixpath.py", line 247, in expanduser userhome = pwd.getpwuid(os.getuid()).pw_dir keyerror: 'getpwuid(): uid not found: 1000'

I believe this problem is described here:
http://blog.dscpl.com.au/2015/12/unknown-user-when-running-docker.html

this simple fix make it work again

https://bugs.python.org/issue10496

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[gaborbernat]

Is this ready for merge then?

[asvetlov]

I believe a test for new functionality and news record is required.
Mentioning in docs the added feature is also makes sense

[bedevere-bot]

A Python core developer has requested some changes be made to your pull request before we can consider merging it. If you could please address their requests along with any other requests in other reviews from core developers that would be appreciated.

Once you have made the requested changes, please leave a comment on this pull request containing the phrase I have made the requested changes; please review again. I will then notify any core developers who have left a review that you're ready for them to take another look at this pull request.

[vstinner]

I wrote PR #10919 which has much more comments, more tests and a NEWS entry. I close this PR.

Thanks @Cinerar for your contribution!