see streaming output of image build?

[dtenenba]

Is there a way to see the output of Image#build... as it is happening, the way I could if I ran docker build from the command line? Like, maybe there's a way to use an Excon streaming response with the docker-api to facilitate this? Some of my image builds can take a long time and I'd like to know that something is actually happening rather than have to wait a long time only to find that the code is hung or the daemon is not responding, or something. The daemon itself doesn't seem to log the information I'm looking for (which is essentially the same stdout/stderr I would see if I ran docker build from the command line). I'm actually running Docker::Image#build_from_dir right now and it has just been sitting there for a very long time. I expect this build to take some time but it would be good to know what is going on...is this possible?

[dtenenba]

Sorry, just saw this:
"If a block is passed, chunks of output produced by Docker will be passed to that block."

[ghost]

This is broken, even when using a block.
filed a new issue: #500