run build on mr|master|develop only

build/ci/.deploy-k8s.yml

@@ -2,7 +2,9 @@ build:k8s-bot:
   stage: build
   image: golang:1.16
   rules:
-    - if: $CI
+    - if: $CI_COMMIT_BRANCH == "develop"
+    - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH
+    - if: $CI_PIPELINE_SOURCE == "merge_request_event"
   script:
     - cd build/cd
     - go build -o k8s-bot