CI: use common/gitlab-ci.yml file

.gitlab-ci.yml

-image: registry.videolan.org/videolan-gitlab-pages:20231201145306
-
-variables:
-  GIT_STRATEGY: clone
-  ROOT_URL: https://docs.videolan.me/vlc-user
-  INSTALLDIR: public
-  GIT_BRANCH: $CI_COMMIT_BRANCH
-
-# Create a global cache to keep other branch and jobs pages
-cache:
-  key: one-cache-to-rule-them-all
-  paths:
-  - public
-
-# generate platform websites
-pages:
-  tags:
-  - pages
-  stage: deploy
-  script: |
-      if [ "$GIT_BRANCH" == "master" ]; then
-          make html VERSION="" PLATFORM=""
-          make root_redirect
-          make platform_redirect PLATFORM=desktop
-          make platform_redirect PLATFORM=android
-          make install
-      else
-          make html LANGUAGE=en
-          make install
-      fi
-  artifacts:
-    paths:
-    - public
-  only:
-    - desktop/3.0
-    - android/3.5
-    - master
-