Update .gitlab-ci.yml file

.gitlab-ci.yml

@@ -21,6 +21,8 @@ stages:          # List of stages for jobs, and their order of execution
 
 build:       # This job runs in the build stage, which runs first.
   stage: build
+  tags:
+    - local-runner
   script:
     - echo "Compiling the code..."
     - ./gradlew build -Pprofile=prod