tagging each job with macos

.gitlab-ci.yml

@@ -23,6 +23,8 @@ build-job:       # This job runs in the build stage, which runs first.
   script:
     - echo "Compiling the code..."
     - echo "Compile complete."
+  tags:
+    - MacOS
 
 unit-test-job:   # This job runs in the test stage.
   stage: test    # It only starts when the job in the build stage completes successfully.
@@ -30,6 +32,9 @@ unit-test-job:   # This job runs in the test stage.
     - echo "Running unit tests... This will take about 60 seconds."
     - sleep 60
     - echo "Code coverage is 90%"
+  tags:
+    - MacOS
+
 
 lint-test-job:   # This job also runs in the test stage.
   stage: test    # It can run at the same time as unit-test-job (in parallel).
@@ -37,9 +42,13 @@ lint-test-job:   # This job also runs in the test stage.
     - echo "Linting code... This will take about 10 seconds."
     - sleep 10
     - echo "No lint issues found."
+  tags:
+    - MacOS
 
 deploy-job:      # This job runs in the deploy stage.
   stage: deploy  # It only runs when *both* jobs in the test stage complete successfully.
   script:
     - echo "Deploying application..."
     - echo "Application successfully deployed."
+  tags:
+    - MacOS