[xen staging] CI: Fix container build jobs

[patchbot@xxxxxxx]

commit 54c7c5cd982340d76484a7a7af277e083c418fd3
Author:     Anthony PERARD <anthony.perard@xxxxxxxxxx>
AuthorDate: Sun Dec 7 15:52:16 2025 +0100
Commit:     Anthony PERARD <anthony.perard@xxxxxxxxxx>
CommitDate: Thu Dec 18 16:44:03 2025 +0100

    CI: Fix container build jobs
    
    `docker:stable` tag hasn't been updated in 5 years, and has been
    deprecated, according to https://hub.docker.com/_/docker, while
    `docker:dind` (image use for the service) is using a recent version of
    docker.
    
    Now, `docker info` fails with:
        Error response from daemon: client version 1.40 is too old. ...
    
    Switch to a newer tag, and just the "cli" version which contains only
    the docker client. With that, both `:dind` and `:cli` should keep
    using the same version of version. (`:cli` seems to be the base image
    used to build `:dind`.)
    
    Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
    Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
 automation/gitlab-ci/containers.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/automation/gitlab-ci/containers.yaml 
b/automation/gitlab-ci/containers.yaml
index 25e8bdc34b..8b702a1d82 100644
--- a/automation/gitlab-ci/containers.yaml
+++ b/automation/gitlab-ci/containers.yaml
@@ -1,6 +1,6 @@
 .container-build-tmpl:
   stage: containers
-  image: docker:stable
+  image: docker:cli
   tags:
     - container-builder
   rules:
--
generated by git-patchbot for /home/xen/git/xen.git#staging