Update .gitlab-ci.yml file

.gitlab-ci.yml

+image: busybox
+
+pages:
+  stage: deploy
+  script:
+    - echo "The site will be deployed to $CI_PAGES_URL"
+  artifacts:
+    paths:
+      - public
+  rules:
+    - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH
\ No newline at end of file