Création de l'onglet Cheat Sheet et ajout d'une page docker
Update docs/tutopain/webdav-seafile-linux.md, mkdocs.yml, docs/cheat-sheet/docker.md, docs/cheat-sheet/bash-script.md, docs/cheat-sheet/mkdocs.md
Update docs/tutopain/webdav-seafile-linux.md, mkdocs.yml, docs/cheat-sheet/docker.md, docs/cheat-sheet/bash-script.md, docs/cheat-sheet/mkdocs.md