refactor(ci): switch to gitlab standard pages deployment

.gitlab-ci-mkdocs.yml

@@ -50,15 +50,12 @@ mkdocs:bundle:
     paths:
       - ./*.tar.gz
 
-mkdocs:deploy:
+pages:
   stage: deploy
   tags:
-    - production
-  variables:
-    EXPORT_DIR: "/var/www/html/pages"
+    - docker
   script:
-    - mkdir -p "$EXPORT_DIR/$CI_PROJECT_NAME"
-    - cp -r site/* "$EXPORT_DIR/$CI_PROJECT_NAME"
+    - mv site public/
   needs:
     - mkdocs:compile
   only:
@@ -69,3 +66,6 @@ mkdocs:deploy:
       - mkdocs.yml
       - CHANGELOG.md
       - LICENSE.md
+  artifacts:
+    paths:
+      - public