Re: [Qemu-devel] [PATCH 0/7] docker: update Ubuntu and Fedora images, deprecate old ones

[Philippe Mathieu-Daudé]

On 01/16/2018 11:26 PM, Fam Zheng wrote:
> On 01/12/2018 08:49 PM, Philippe Mathieu-Daudé wrote:
>> Hi,
>>
>> This series is to be clearer about which upstream version we are using.
>>
>> All "FROM distrib:latest" entries have now been removed and replaced by
>> explicit "FROM distrib:version" ones.
>>
>> To keep backward compatibility, a warning is displayed to the user,
>> suggesting which correct base image to use.
>>
>> To be consistent, we remove the deprecated images of the "make docker"
>> output.
> 
> Changing image names when a new release comes out is not maintainable
> for Fedora and Ubuntu because of the fast pace. Therefore I prefer
> Paolo's simple patch.
> 
> Maybe you can somehow create an alias in Makefile to point "fedora" to
> "fedora${last_release_num}", and update it when adding a new release.
> But still I don't think keeping more than one fedora dockerfiles is very
> useful.
> 
> In principle, we use Debian, CentOS and ubuntu-lts to cover long living
> releases and {ubuntu,fedora}:latest to cover cutting edge releases.
> Spending effort on tests is better than adding more versions, IMO.

I went this way following your previous advice in
http://lists.nongnu.org/archive/html/qemu-devel/2017-07/msg05282.html
but I get your point.