Exit Code from docker run inconsistent

[errm]

Host OS: Ubuntu Precise (The official docker Vagrant)

It seems like the exit code being returned by docker run may or may not be correct? It seems to be wrong 50% of the time.

vagrant@precise64:/assemblyline$ for i in `seq 1 50`
> do
> docker run stackbrew/ubuntu:saucy /bin/sh -c "exit 17"
> echo $?
> done
17
17
0
0
0
17
17
0
17
0
0
0
17
17
0
17
17
0
0
0
0
0
0
17
17
17
0
0
0
0
17
17
0
0
0
17
17
17
17
0
0
0
17
17
17
17
17
17
17
0

[tianon]

What's your docker version ? We've merged a bunch of fixes to the exit code handling into the latest master code, so if you're willing to test to see if they fix your issues, that'd be very helpful.

[errm]

Docker version 0.7.6, build bc3b2ec

Is there a guide on how to build master somewhere?

[errm]

Thanks it seems fixed in master

vagrant@precise64:/docker$ docker -v
Docker version 0.7.6-dev, build e6ae8f6-dirty
vagrant@precise64:/docker$ for i in `seq 1 50`; do docker run stackbrew/ubuntu:saucy /bin/sh -c "exit 17"; echo $?; done
17
17
17
17
17
17
17
17
17
17
17
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17
17
17
17
17
17
17
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17
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17