Gitlab Pages deploy wrong if my project exists public folder

Hi,

Gitlab Pages deploy wrong if my project existed public folder

This is .gitlab-ci.yml

pages:
  stage: deploy
  script:
    - mkdir .public
    - cp -r * .public
    - mv .public public
  artifacts:
    paths:
      - public
  rules:
    - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH