Re: [Qemu-devel] [PATCH 3/4] docker: update fedora to f30

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

On 5/24/19 1:17 PM, Marc-André Lureau wrote:
> Hi
> 
> On Fri, May 24, 2019 at 9:41 AM Philippe Mathieu-Daudé
> <philmd@redhat.com> wrote:
>>
>> On 5/24/19 1:40 AM, Marc-André Lureau wrote:
>>> Released last month.
>>>
>>> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
>>> ---
>>>  tests/docker/dockerfiles/fedora.docker | 2 +-
>>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>>
>>> diff --git a/tests/docker/dockerfiles/fedora.docker b/tests/docker/dockerfiles/fedora.docker
>>> index 69d4a7f5d7..1496b68ba1 100644
>>> --- a/tests/docker/dockerfiles/fedora.docker
>>> +++ b/tests/docker/dockerfiles/fedora.docker
>>> @@ -1,4 +1,4 @@
>>> -FROM fedora:29
>>> +FROM fedora:30
>>
>> Hmm this patch is pending for review:
>> https://lists.gnu.org/archive/html/qemu-devel/2019-05/msg00819.html
> 
> Oh I missed that. Maybe we should use "latest" to avoid bumping the
> version every 6 months.
> 
> fwiw we have different versions:
> 
> tests/docker/dockerfiles/fedora-cris-cross.docker:FROM fedora:latest
> tests/docker/dockerfiles/fedora-i386-cross.docker:FROM fedora:29
> tests/docker/dockerfiles/fedora.docker:FROM fedora:29
> 
> In 62559b916 "tests: update Fedora i386 cross image to Fedora 29", Daniel said:
> 
>     Using the "latest" tag is not a good idea because this changes what
>     release it points to every 6 months. Together with caching of docker
>     builds this can cause confusion where CI has cached & built with Fedora
>     N, while a developer tries to reproduce a CI problem with Fedora N + 1,
>     or vica-verca.
> 
> But at the same time, Daniel bumped f28 to f29 in commit 19a9978db1.
> 
> It's confusing, do we need some stability or follow the latest?

Tracking a stable release helps to handle new compiler warnings when
bisecting.

See also:

commit 5b9b49d7bd3e0da13e8f6d58578443a11817f56e
Author: Paolo Bonzini <pbonzini@redhat.com>
Date:   Fri Jan 12 12:11:43 2018 +0100

    docker: change Fedora base image to fedora:27

    Using "fedora:latest" makes behavior different depending on when you
    actually pulled the image from the docker repository.  In my case,
    the supposedly "latest" image was a Fedora 25 download from 8 months
    ago, and the new "test-debug" test was failing.

    Use "27" to improve reproducibility and make it clear when the image
    is obsolete.

Why we don't add a new file when a new version get released?
See: https://lists.gnu.org/archive/html/qemu-devel/2018-01/msg03868.html