[Linux] In "Drupal on Linux Web App with MySQL" it doesn't allow you to use local on instance DB but template states it have local MYSQL DB
Either the template is having some issues or it's wrongly stated in the template and local MySQL DB is not available in this template.
In either case, you need to correct either the template or template description.
[Linux] We previously did support local mysql but there were some reliability issues. Hence we are re-working the image to support local mysql inorder to support drupal on linux with local mysql
The description has been updated to remove local mysql for now to reflect this.