View our web always WWW

Sometimes we install content management systems, online shops and suddenly we realize that we alwaysload the url without www but such charges us http://doowebs.eu and want to show us the url https://www.doowebs.eu

Well just have to create a file but what we called .htaccess at the root of our file system and if we add these simple lines to the top.

RewriteEngine On
RewriteCond %{HTTP_HOST} ^doowebs\.eu$ [NC]
RewriteRule ^(.*)$ https://www.doowebs.eu/$1 [R=301,QSA,L]