refactor: Add dotenv support in medusa-config.js

.gitignore

@@ -4,4 +4,4 @@
 /uploads
 /node_modules
 yarn-error.log
-
+/.idea

medusa-config.js

@@ -1,3 +1,27 @@
+const dotenv = require('dotenv')
+
+let ENV_FILE_NAME = '';
+switch (process.env.NODE_ENV) {
+	case 'production':
+		ENV_FILE_NAME = '.env.production';
+		break;
+	case 'staging':
+		ENV_FILE_NAME = '.env.staging';
+		break;
+	case 'test':
+		ENV_FILE_NAME = '.env.test';
+		break;
+	case 'development':
+	default:
+		ENV_FILE_NAME = '.env';
+		break;
+}
+
+try {
+	dotenv.config({ path: process.cwd() + '/' + ENV_FILE_NAME });
+} catch (e) {
+}
+
 // CORS when consuming Medusa from admin
 const ADMIN_CORS = process.env.ADMIN_CORS || "http://localhost:7000,http://localhost:7001";