Upload docker 1.12.6

[rezie]

Origin 1.4 requires docker 1.12 and the only one available from docker's official site is 1.13. Need to upload a copy somewhere for new users to download

[rezie]

MacOS version done. Need Windows one now.

[rezie]

For future reference: docker/for-mac#1120 (comment)

Relevant snippet copied in case original issue disappears

There are two ways to downgrade:

1. Recreate the URL

If you happen to know the build number (e.g. 14937) -- not the git commit you see when running docker --version or docker version -- you can form the URL:

https://download.docker.com/mac/{{ beta | stable}}/{{ version }}.{{ build number }}/Docker.dmg
# example:
https://download.docker.com/mac/stable/1.12.6.14937/Docker.dmg
(Note: the build number shows up in "About Docker" from the menulet menu.)

screen shot 2017-01-23 at 2 12 56 pm

Of course, you'd need to know the build number, which is hard to do if you've already upgraded.

[rezie]

uploaded