adding #37

app/Commands/LetsEncryptInstallCommand.php

@@ -50,7 +50,7 @@ class LetsEncryptInstallCommand extends Command
         $output = [];
         $this->info('LetsEncrypt adding ppa for certbot...');
         exec('add-apt-repository -y universe 2>&1', $output);
-        exec('add-apt-repository -y ppa:certbot/certbot 2>&1', $output);
+        exec('add-apt-repository -y -r ppa:certbot/certbot 2>&1', $output);
 
         // @TODO apt add a Warning for no good, in a later version output will be scanned for helpfull infos
         $this->line(implode("\n", Install::filterAptMessages($output)));