Prevent pipeline from running when there is an active merge request

.gitlab-ci.yml

@@ -8,6 +8,8 @@ build-dev:
     - spraaksamlingene_01
   stage: build
   rules:
+    - if: $CI_OPEN_MERGE_REQUESTS == null
+      when: never
     - if: $CI_COMMIT_TAG == null
       when: always
   script:
@@ -52,6 +54,8 @@ deploy-dev:
     - spraaksamlingene_01
   stage: deploy
   rules:
+  - if: $CI_OPEN_MERGE_REQUESTS == null
+    when: never
   - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH || $CI_PIPELINE_SOURCE == 'merge_request_event'
     when: never
   - if: $CI_COMMIT_BRANCH != $CI_DEFAULT_BRANCH && $CI_PIPELINE_SOURCE != 'merge_request_event'