Updated docker-py to 0.6.0 to fix issues with directories and symlinks

[petercv]

By updating docker-py to version 0.6.0 an issue is resolved where symlinks and empty directories were not properly passed to docker when building an image. See #651. This issue resulted in images that were different from images built with the default docker client.

I successfully ran all the tests.

Output:

Ran 156 tests in 206.877s

OK

[thaJeztah]

You forgot to "sign off" your commit, see https://github.com/docker/fig/blob/master/CONTRIBUTING.md

You don't have to create a new pull request to fix this, just amend your commit and force push, that should automatically update the pull request.

[petercv]

Sorry about that, fixed now.

[thaJeztah]

Hmm seems that added extra commits instead of replacing the existing one. I'm not very good at git (sorry) perhaps someone else is able to help out fixing it. 😄

[petercv]

Think I fixed it now with some help of a friend and StackOverflow. :)

[thaJeztah]

Yeah! All green 😃

[petercv]

@thaJeztah I updated the pull request last Friday to also update the version number in setup.py (although during building of fig you get a warning on the requirements in setup.py that they already have been satisfied). Now the tests fail, but there is no description on why they failed. Do you know more?

[bfirsh]

It's because Wercker is running Docker 1.2.0, which I think we should still support.

[petercv]

@bfirsh sure? Just read an article that 1.3.2 has just been released which includes 2 fixes for major security vulnerabilities, so anyone should upgrade anyway.

[dnephin]

I'd like to get this into the next release if it's ready.

We should be able to fix the build with an environment variable in the wercker config setting the docker api version for docker-py.

It looks like it doesn't support an environment variable yet, but it should be easy enough to add that support to fig/cli/docker_client.py, something like:

docker_api_version = os.environ.get('DOCKER_API_VERSION', docker.client.DEFAULT_DOCKER_API_VERSION)
...
Client(..., version=docker_api_version)

I'm not exactly sure how to set an environment variable in wercker.yml, but it should be possible, or we can have it set as part of script/test.

I think with these changes you should be able to get the tests passing.

[bfirsh]

I think we can pretty safely use version 1.14 of the remote API by default.

[bfirsh]

Here we go: #718

[bfirsh]

Fixed in #718. Thanks @petercv!