Only add update & rollback commands when in phar mode

README.md

@@ -22,13 +22,29 @@ A tool to manage your PHP School workshops. Search, install, update & remove wor
 
 ## Installation
 
+### Phar
+
+This is the recommended installation method.
+
 ```
 curl https://php-school.github.io/workshop-manager/workshop-manager.phar
 mv workshop-manager.phar /usr/local/bin/workshop-manager
 chmod +x /usr/local/bin/workshop-manager
 workshop-manager verify
 ```
 
+### Composer
+
+If you install the workshop-manager via composer you will need to make sure that you don't have conflicting dependencies
+with other globally installed tools. Also you will need to be able to use the self-update and rollback commands.
+
+You will need to make sure that your composer global bin directory is available in your $PATH environment variable.
+
+```
+composer global require php-school/workshop-manager
+workshop-manager verify
+```
+
 This snippet downloads the phar package (an executable PHP package) and moves it to a common install directory, makes it executable and then runs the workshop manager's verify command. You should see some green success messages if everything went will.
 
 

app/config.php

@@ -46,10 +46,14 @@
             ->setDescription('Search for a PHP School workshop.');
         $application->command('installed', ListWorkshops::class, ['show'])
             ->setDescription('List installed PHP School workshops.');
-        $application->command('self-update', SelfUpdate::class)
-            ->setDescription('Update the workshop manager to the latest version.');
-        $application->command('rollback', SelfRollback::class)
-            ->setDescription('Rollback the workshop manager to the previous version.');
+
+        if (extension_loaded('phar') && Phar::running()) {
+            $application->command('self-update', SelfUpdate::class)
+                ->setDescription('Update the workshop manager to the latest version.');
+            $application->command('rollback', SelfRollback::class)
+                ->setDescription('Rollback the workshop manager to the previous version.');
+        }
+
         $application->command('verify', VerifyInstall::class, ['validate'])
             ->descriptions('Verify your installation is working correctly');