[all PATCH] gitlab: add CI job for validating DCO signoff

[Daniel P. Berrangé]

On Wed, Apr 22, 2020 at 07:01:50PM +0200, Andrea Bolognani wrote:
> On Wed, 2020-04-22 at 17:20 +0100, Daniel P. Berrangé wrote:
> > On Wed, Apr 22, 2020 at 06:11:13PM +0200, Andrea Bolognani wrote:
> > > Why is it that we want to skip those branches, anyway? I get why
> > > they're not necessary in a MR-based workflow, but we're not quite
> > > there yet...
> > 
> > This was an inexact way to stop the checks running against the
> > master repo, after the patches have been merged.
> > 
> > The flaw in this is that a user could indeed open a merge request
> > that uses a "master" or "v*maint" branch in their private fork,
> > rather than a named feature branch.
> > 
> > Really we want it to run on all commits in a user's fork, but
> > not run in the master repos post-merge.
> 
> I still don't understand why we would want to single out those
> branches and not run the DCO check on them. What harm would it
> cause? It takes around a minute to run it, which is significantly
> less than the other jobs running during the prebuild stage...

The check-dco script doesn't actually work if run against the
main libvirt repo, as it ends up trying to use itself as a
reference and failing to figure out which commits need checking.
Of course that's a bug that's fixable, but in general I think it
is better to not runthe job at all and thus eliminate any risk
of false failures.

Regards,
Daniel
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