ci: ne compile pas l'image docker lors d'une pipeline programmée

.gitlab-ci.yml

@@ -24,7 +24,7 @@ docker:
   - docker push ${IMAGE_NAME}:latest
   image: docker:20.10.17
   rules:
-    - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH
+    - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH && $CI_PIPELINE_SOURCE != "schedule"
       changes:
         paths:
         - Dockerfile-base