Update .gitlab-ci.yml

.gitlab-ci.yml

-#This declares the pipeline stages  
+#This declares the pipeline stages 
+stages:
+  - build
+  - test
+  
+  
+build:
+  stage: build
+  script:
+  - echo "Initiliaze build task..."
+  - ./gradlew clean build
+  - echo "Finalized build task..."
+  artifacts:
+    untracked: true
+  tags:
+    - build  
 
 test: 
     script: