Merge branch 'feature/QA-354_prevent_duplicate_pipelines' into 'develop'

QA-354 Prevent duplicate pipelines for MRs

Closes QA-354

See merge request kasm-technologies/internal/workspaces-core-images!384

.gitlab-ci.yml

@@ -11,6 +11,15 @@ include:
 default:
   retry: 2
 
+# Prevent duplicate pipelines for push events to branches that also have open MRs
+workflow:
+  rules:
+    - if: $CI_PIPELINE_SOURCE == "merge_request_event"
+      when: always
+    - if: $CI_PIPELINE_SOURCE == "push" && $CI_OPEN_MERGE_REQUESTS
+      when: never
+    - when: always
+
 stages:
   - template
   - run