Add manylinux2010-i686 docker image

[veblush]

I roughly manage to create a manylinux2010-i686 docker image based on CentOS 6. CentOS 6 is pretty old and i686 doesn't get enough attention so there are a couple of issues to be resolved unlike x86_64.

• There is no i686 devtoolset-8 in SCL so I replaced it with the devtoolsset-7 in cloud linux repo. Having the same version would be the best but 7.3 is still much better than built-in gcc 4.4.
• CentOS 6 has a problem on curl with installed certificates so I have to add "-k" option to curl as a workaround. (I tried to update the existing system certificate but it didn't work)
• auditwheel doesn't have a proper list of symbols for i686. PR is now ready.
• CentOS 6 32bit doesn't seem to have a vsyscall=emualate issue unlike x86_64 so it can run smoothly without the monkey patch that x86_64 base image has.

Any suggestion to enhance this is welcome!

[mayeut]

@veblush, can you update the .travis.yml for the image to be built please ?

[veblush]

@mayeut, I added i686 test to .travis running in a sequential fashion but I believe that there must be a more efficient way like using parallel execution (matrix or something?). If you know how to, please let me know.

[mayeut]

LGTM
Waiting for auditwheel release

[veblush]

Thank you for the review!

And then how can we initiate the auditwheel release process? Once it's released with the next version (let's say 2.2) and next action item would be to update auditwheel==2.1.0 to auditwheel==2.2.0 in py36-requirements.txt, right?

[mayeut]

Once it's released with the next version (let's say 2.2) and next action item would be to update auditwheel==2.1.0 to auditwheel==2.2.0 in py36-requirements.txt, right?

Well yes but not in your PR directly, once auditwheel gets released, a PR will be automatically created for the master branch. Once this PR is merged, you'll need to rebase your branch on master (& if possible squash the commits in one)

[mayeut]

@veblush, can you rebase & squash your changes please ?

[veblush]

Done. I appreciate your help on this! 😄

[veblush]

Grad to see this merged. Is there something to do in order to have quay.io/pypa/manylinux2010_i686 or just matter of time?

[mayeut]

Should be a matter of time, you can follow the progress here

[mayeut]

argh, build failed because the repo does not exist on quay.io

@njsmith, @rmcgibbo, @takluyver, can you create the repo quay.io/pypa/manylinux2010_i686 please ?

[rmcgibbo]

done. i think

[mayeut]

Thanks @rmcgibbo, I restarted the build, we'll see if it gets deployed this time.

[mayeut]

@rmcgibbo, unfortunately the build is still failing.

[takluyver]

I've had a go at making the permissions for that repo match the other manylinux2010 one - try now.

[takluyver]

Or I guess I can press restart as well as anyone else. 😛 I'm going to bed now, so hopefully it will work this time.

[mayeut]

Thanks @takluyver, image is now deployed.

[takluyver]

Thanks everyone who figured out how to make the i686 image. :-)

[veblush]

Thank you for uploading!