ci: create extra stage for deploy dry run

.gitlab-ci.yml

@@ -3,6 +3,7 @@ default:
 
 stages:
   - build
+  - deploy:dry-run
   - deploy
 
 docker:build:
@@ -15,7 +16,7 @@ docker:build:
     - docker push $CI_REGISTRY_IMAGE:$CI_COMMIT_BRANCH-$CI_COMMIT_SHORT_SHA
 
 deploy:staging:dry-run:
-  stage: deploy
+  stage: deploy:dry-run
   script:
     - >
       helm \