fix deprecated CI variable

.gitlab-ci.yml

@@ -13,9 +13,9 @@ stages:
 build:
   stage: build
   script:
-    - docker login -u gitlab-ci-token -p "$CI_BUILD_TOKEN" registry-gitlab.pasteur.fr
-    - docker build --pull -t "$CI_REGISTRY_IMAGE:$CI_BUILD_REF_NAME" .
-    - docker push "$CI_REGISTRY_IMAGE:$CI_BUILD_REF_NAME"
+    - docker login -u gitlab-ci-token -p "$CI_JOB_TOKEN" registry-gitlab.pasteur.fr
+    - docker build --pull -t "$CI_REGISTRY_IMAGE:$CI_COMMIT_REF_NAME" .
+    - docker push "$CI_REGISTRY_IMAGE:$CI_COMMIT_REF_NAME"
 
 extract:
 # same name for sequentiel treatment (extract after build)