Use docker "stable" tag

Use the same tag in all jobs.

Signed-off-by: Camilla Conte <cconte@redhat.com>
Message-Id: <20230522174153.46801-3-cconte@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

.gitlab-ci.d/container-template.yml

@@ -3,7 +3,7 @@
   image: docker:stable
   stage: containers
   services:
-    - docker:dind
+    - docker:stable-dind
   before_script:
     - export TAG="$CI_REGISTRY_IMAGE/qemu/$NAME:latest"
     - export COMMON_TAG="$CI_REGISTRY/qemu-project/qemu/qemu/$NAME:latest"