Docker ImageCollection.build() api has changed. It now returns a tuple

[dnene]

ansible-container/container/docker/engine.py

Line 1151 in 2fa778a

image = self.client.images.build(fileobj=tarball_file,

As per the commit docker/docker-py@631cc3c (4 months ago) the return value of build() now returns a tuple with the first item being the image. Hence

                image = self.client.images.build(fileobj=tarball_file,
                                                 custom_context=True,
                                                 tag=tag,
                                                 rm=True,
                                                 nocache=not cache)

Instead needs to be

                image,_ = self.client.images.build(fileobj=tarball_file,
                                                 custom_context=True,
                                                 tag=tag,
                                                 rm=True,
                                                 nocache=not cache)

?
Also do the dependencies need to be updated to ensure the correct version of docker-py gets installed with ansible container

[zskulcsar]

@dnene see #937 as they are related.

[dnene]

Yes, I did indeed notice that when surprisingly the code worked in debug mode .. so I had to hunt down the issue by stepping into the code 😃