improved doc published script

publish_documentation.sh

@@ -1,10 +1,12 @@
 #!/usr/bin/env bash
 
+git checkout main
+git pull
 docker-compose run --rm mkdocs build
 git add site
 git stash
 git checkout gh-pages
 git checkout stash -- site
 git commit -m 'updating documentation'
-git push
+git push --force
 git checkout main