Tail image build logs on push with -l param

[andreasjansson]

Signed-off-by: andreasjansson [email protected]

[bfirsh]

Nice!

A few thoughts:

• We should avoid adding single character flags without a lot of thought. The process (which we should document) should probably be add a long flag, then over time add short flags after we tease out usage. User interface also could do with improvement here but I will be tearing apart user interface so no problem.
• Would it be too hard to add basic tests for this behavior? I'm wondering now we are in a "beta" phase, we should be adding tests for any behavior.

If tests are hard or you don't think it's important feel free to merge!

[andreasjansson]

@bfirsh Added test and removed -l shorthand.