add build test

.gitlab-ci.yml

@@ -0,0 +1,13 @@
+default:
+  image: gradle:jdk17-alpine
+  tags:
+    - robot
+
+stages:          # List of stages for jobs, and their order of execution
+  - build
+
+build-job:       # This job runs in the build stage, which runs first.
+  stage: build
+  script:
+    - chmod +x gradlew
+    - ./gradlew build