Update .gitlab-ci.yml file

.gitlab-ci.yml

@@ -17,35 +17,34 @@
 # https://gitlab.com/gitlab-org/gitlab/-/blob/master/lib/gitlab/ci/templates/Getting-Started.gitlab-ci.yml
 
 stages:          # List of stages for jobs, and their order of execution
-  - prepare
   - build
   - test
   - deploy
 
-prepare-job:
-  stage: prepare
-  script:
-    - apt install docker
-    - apt install npm
-
 build-job:       # This job runs in the build stage, which runs first.
   stage: build
+  image: docker:latest
   script:
+    - cd ./app
     - echo "Compiling the code..."
     - docker compose build
     - echo "Compile complete."
 
 unit-test-job:   # This job runs in the test stage.
   stage: test    # It only starts when the job in the build stage completes successfully.
+  image: npm:latest
   script:
+    - cd ./app
     - echo "Running unit tests..."
     - npm test
     - echo "Code coverage is 90%"
 
 deploy-job:      # This job runs in the deploy stage.
   stage: deploy  # It only runs when *both* jobs in the test stage complete successfully.
+  image: docker:latest
   environment: production
   script:
+    - cd ./app
     - echo "Deploying application..."
     - docker compose up
     - echo "Application successfully deployed."