Client.build attempts to clean up resources it does not own

[Julian]

https://github.com/docker/docker-py/blob/master/docker/client.py#L479-L480 tries to close the context whenever it's present, but it possibly does not own (== did not create) that object, since it could have come from fileobj when custom_context is True.

[shin-]

Thank you for the report! Would you like to submit a fix?

[Julian]

Possibly, I'm still fighting through a couple of issues to get my actual app to work, but after that I'll have a look.

[shin-]

Fix is in docker-py 0.7.2 !

[Julian]

Awesome, thanks for the quick turnaround, appreciated!