Update .gitlab-ci.yml file

.gitlab-ci.yml

-stages:
-  - stage-1
-  - stage-2
-  - stage-3
-
-deploy-a:
-  stage: stage-1
-  script: echo
-  environment: prd
-  when: manual
-  allow_failure: false
-
-deploy-b:
-  stage: stage-2
-  script: echo
-  environment: prd
-  when: manual
-  allow_failure: false
-
-deploy-c:
-  stage: stage-3
-  script: echo
-  environment: prd
-  when: manual
+test:
+  script:
+    - echo $TEST_FILE_VAR
\ No newline at end of file