Adding a debug mode to the worker so you can see what commands are being run.

PHPCI/Command/WorkerCommand.php

@@ -50,7 +50,8 @@ class WorkerCommand extends Command
     {
         $this
             ->setName('phpci:worker')
-            ->setDescription('Runs the PHPCI build worker.');
+            ->setDescription('Runs the PHPCI build worker.')
+            ->addOption('debug', null, null, 'Run PHPCI in Debug Mode');
     }
 
     protected function execute(InputInterface $input, OutputInterface $output)
@@ -65,6 +66,12 @@ class WorkerCommand extends Command
             );
         }
 
+        // Allow PHPCI to run in "debug mode"
+        if ($input->hasOption('debug') && $input->getOption('debug')) {
+            $output->writeln('<comment>Debug mode enabled.</comment>');
+            define('PHPCI_DEBUG_MODE', true);
+        }
+
         $config = Config::getInstance()->get('phpci.worker', []);
 
         if (empty($config['host']) || empty($config['queue'])) {

PHPCI/Helper/BaseCommandExecutor.php

@@ -90,6 +90,10 @@ abstract class BaseCommandExecutor implements CommandExecutor
 
         $pipes = array();
 
+        if (defined('PHPCI_DEBUG_MODE')) {
+            $this->logger->logDebug($command);
+        }
+
         $process = proc_open($command, $descriptorSpec, $pipes, $this->buildPath, null);
 
         if (is_resource($process)) {

PHPCI/Logging/BuildLogger.php

@@ -67,7 +67,7 @@ class BuildLogger implements LoggerAwareInterface
         }
     }
 
-   /**
+    /**
      * Add a success-coloured message to the log.
      * @param string
      */
@@ -98,6 +98,15 @@ class BuildLogger implements LoggerAwareInterface
         );
     }
 
+    /**
+     * Add a debug message to the log.
+     * @param string
+     */
+    public function logDebug($message)
+    {
+        $this->log("\033[0;33m" . $message . "\033[0m");
+    }
+
     /**
      * Sets a logger instance on the object
      *