Re: [PATCH] gitlab-ci: Only push Docker 'latest' image when building default branch

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

On 2/16/21 7:55 AM, Thomas Huth wrote:
> On 15/02/2021 20.28, Philippe Mathieu-Daudé wrote:
>> While we are interested in building docker images in different
>> branches, it only makes sense to push 'latest' to the registry
>> when this is the project default branch (usually 'master').
>>
>> Else when pushing different branches concurrently we might have
>> inconsistent image state between branches.
>>
>> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
>> ---
>>   .gitlab-ci.d/containers.yml | 2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/.gitlab-ci.d/containers.yml b/.gitlab-ci.d/containers.yml
>> index 90fac85ce46..52a915f4141 100644
>> --- a/.gitlab-ci.d/containers.yml
>> +++ b/.gitlab-ci.d/containers.yml
>> @@ -17,7 +17,7 @@
>>             -t "qemu/$NAME" -f "tests/docker/dockerfiles/$NAME.docker"
>>             -r $CI_REGISTRY_IMAGE
>>       - docker tag "qemu/$NAME" "$TAG"
>> -    - docker push "$TAG"
>> +    - test "$CI_COMMIT_BRANCH" = "$CI_DEFAULT_BRANCH" && docker push
>> "$TAG"
> 
> So does that mean that the following stages in the CI (i.e. build, test)
> are only always (i.e. also for the non-master branches) going to use
> containers that have been build on the master branch?

Hmm good point. Should we use "$CI_COMMIT_BRANCH" instead of "latest"?