Update .gitlab-ci.yml

.gitlab-ci.yml

 build-job:
   stage: build
+  tags:
+    - ci
   script:
-    - ci "Hello, "
+    - echo "Hello, "
 
 test-job1:
   stage: test
+  tags:
+    - ci
   script:
-    - ssh "This job tests something"
+    - echo "This job tests something"
 
 test-job2:
   stage: test
+  tags:
+    - ci
   script:
-    - ssh "This job tests something, but takes more time than test-job1."
-    - ssh "After the echo commands complete, it runs the sleep command for 20 seconds"
-    - ssh "which simulates a test that runs 20 seconds longer than test-job1"
+    - echo "This job tests something, but takes more time than test-job1."
+    - echo "After the echo commands complete, it runs the sleep command for 20 seconds"
+    - echo "which simulates a test that runs 20 seconds longer than test-job1"
     - sleep 20
 
 deploy-prod:
   stage: deploy
+  tags:
+    - ci
   script:
-    - ci "This job deploys something from the $CI_COMMIT_BRANCH branch."
\ No newline at end of file
+    - echo "This job deploys something from the $CI_COMMIT_BRANCH branch."
\ No newline at end of file