Hub build command does not fail for unauthorised push to quay

[gianarb]

Expected Behaviour

If Quay auth fails the command hub build should fail with an exit code != 0

Current Behaviour

it reports an error but it has exit-code=0

Possible Solution

Probably we do not handle the error in the right way because we loop over all the actions that need to be re-built.

[tstromberg]

Marking this as important because this is the sort of unexpected behavior that can really make someones day terrible.

[chrisdoherty4]

Obsolete