always disable mail configuration in the UI

CHANGELOG.md

@@ -1,2 +1,2 @@
-* INTERNAL
-  * use 127.0.0.1 for healthcheck instead of localhost
+* ENHANCEMENT
+  * always disable mail configuration in the UI

README.md

@@ -57,7 +57,6 @@ volumes:
 ```Shell
 KANBOARD_PLUGIN_INSTALLER=false
 KANBOARD_CACHE_DRIVER=memory
-KANBOARD_MAIL_CONFIGURATION=true
 KANBOARD_MAIL_FROM=
 KANBOARD_MAIL_TRANSPORT=mail
 KANBOARD_MAIL_SMTP_HOSTNAME=

overlay/etc/templates/config.php.tmpl

@@ -30,7 +30,7 @@ define('CACHE_DIR', '/var/www/app/data/cache');
 define('FILES_DIR', '/var/www/app/data/files');
 
 // Enable/disable email configuration from the user interface
-define('MAIL_CONFIGURATION', {{ getenv "KANBOARD_MAIL_CONFIGURATION" "true" }});
+define('MAIL_CONFIGURATION', false);
 
 // E-mail address used for the "From" header (notifications)
 define('MAIL_FROM', '{{ getenv "KANBOARD_MAIL_FROM" }}');