Update dummy.conf (#4855)

* Update dummy.conf

Rename .sock file to php{version}-dummy.sock instead of  php{version}-%domain%.sock

* Fix bug in version check

bin/v-restart-web-backend

@@ -36,7 +36,7 @@ send_email_report() {
 
 is_format_valid 'restart'
 
-if [ -z "$version" ]; then
+if [ -n "$version" ]; then
 	if [[ ! $version =~ ^[0-9]+\.[0-9]+ ]]; then
 		echo "The specified PHP version format is invalid, it should look like [0-9].[0-9]."
 		echo "Example: 7.0, 7.4, 8.0"

install/deb/php-fpm/dummy.conf

@@ -8,7 +8,7 @@
 
 
 [www]
-listen = /run/php/php%backend_version%-fpm-%domain%.sock
+listen = /run/php/php%backend_version%-fpm-dummy.sock
 listen.owner = hestiamail
 listen.group = www-data
 listen.mode = 0660