add cicd3

.gitlab-ci.yml

 workflow:
   rules:
     - if: $RUN_HELLO_WORLD == "true"
-      when: manual
     - when: never
 
 variables:

pipelines/hello-world.yml

@@ -4,5 +4,6 @@ stages:
 
 hello_world:
   stage: build
+  when: manual
   script:
     - echo "Hello, World!"
\ No newline at end of file