Adding environment variable support

Author: cryptiklemur

src/Application.php

@@ -81,6 +81,15 @@ public function __construct(EmbeddedComposerInterface $embeddedComposer)
         parent::__construct('Bldr', $this->getBldrVersion());
 
         $this->addCommands($this->getCommands());
+        $this->setEnvironmentVariables();
+    }
+
+    /**
+     * Sets Environment Variables
+     */
+    private function setEnvironmentVariables()
+    {
+        putenv('WORK_DIR='.__DIR__);
     }
 
     /**
@@ -134,6 +143,7 @@ public function setBuildName()
             );
         }
 
+        putenv('BUILD_NAME='.$name);
         static::$BUILD_NAME = $name;
     }
 

src/Call/AbstractCall.php

@@ -321,7 +321,7 @@ private function replaceTokens(&$option)
         }
 
         foreach ($matches as $match) {
-            $option = str_replace($match[0], Application::$$match[1], $option);
+            $option = str_replace($match[0], getenv($match[1]), $option);
         }
     }