Add working GitLab CI configuration - basic build and test stages

.gitlab-ci.yml

 stages:
-  - deploy
+  - build
   - test
 
-deploy_to_production:
-  stage: deploy
-  image: alpine:latest
-  tags:
-    - jarvis
-  only:
-    - master
+build:
+  stage: build
   script:
-    - echo "Starting production deployment"
-    - echo "Deployment completed"
+    - echo "Building project"
 
-simple_test:
+test:
   stage: test
-  image: alpine:latest
-  tags:
-    - jarvis
-  only:
-    - master
   script:
-    - echo "Starting test"
-    - echo "Test successful" 
+    - echo "Running tests" 
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