Utilise le nom exact du tag git pour le tag Docker.

.gitlab-ci.yml

@@ -31,7 +31,7 @@ docker:
   stage: build
   tags: [dind]
   variables:
-    IMAGE: "$CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG"
+    IMAGE: "$CI_REGISTRY_IMAGE:$CI_COMMIT_REF_NAME"
   before_script:
     - docker login -u "$CI_REGISTRY_USER" -p "$CI_REGISTRY_PASSWORD" "$CI_REGISTRY"
   script:
@@ -43,6 +43,6 @@ pages:
   extends: .prezbuilder
   variables:
     PREZBUILDER_IMAGE: "$CI_REGISTRY_IMAGE"
-    PREZBUILDER_TAG: "$CI_COMMIT_REF_SLUG"
+    PREZBUILDER_TAG: "$CI_COMMIT_REF_NAME"
   rules:
     - if: $CI_COMMIT_TAG