[CI] Added workflow:rules.

.gitlab-ci.yml

@@ -5,6 +5,13 @@ stages:
   - gui
   - package
 
+workflow:
+  rules:
+    - if: $CI_MERGE_REQUEST_ID
+    - if: $CI_COMMIT_TAG
+    - if: $CI_COMMIT_BRANCH == "master"
+
+
 variables:
   # Docker image names
   CONTAINER_GCC_IMAGE: $CI_REGISTRY_IMAGE/gcc:$CI_COMMIT_REF_SLUG