What is the best cloud infrastructure for hosting a Drupal store.
Is this a spam ? What does it has to do with YunoHost ?
Drupal has not been packaged yet. But there has been an attempt to package it https://github.com/realitygaps/drupal_ynh. Feel free to improve it or you can check this post Hosting a drupal website in Yunohost / questions about Drupal and Custom Webapp to install it from custom web app https://github.com/YunoHost-Apps/my_webapp_ynh.