Disclaimer: An official documentation for replacing the default WYSIWYG with CKeditor has been published here
This is a companion discussion topic for the original entry at https://strapi.io/blog/how-to-change-the-wysiwyg-in-strapi?fbclid=IwAR3f7YdLAIzprO7IWfwFaruukQLR8RyUOwIL-2mUxwG21MaANLJBzUW5S9s