If your docker build fails the jobs will still succeed.

We see in the console output:

time="2015-05-19T21:13:57+01:00" level=info msg="The command [/bin/sh -c failed command returned a non-zero code: 1" 

But then

Finished: SUCCESS

Steps to reproduce

Build this dockerfile:

FROM ubuntu
RUN exit 1

Expected Results

The build should fail

Actual Results

The build succeeds.

I would expect this to cause us to stop building, I also wouldn't expect us to push and tag the image.