diff --git a/.codeclimate.yml b/.codeclimate.yml
index 3d89c6a..1d04a03 100644
--- a/.codeclimate.yml
+++ b/.codeclimate.yml
@@ -1,4 +1,5 @@
-engines:
+# Python Engines
+engines: 
   duplication:
     enabled: true
     config:
@@ -6,14 +7,22 @@ engines:
       - python
   fixme:
     enabled: true
-  markdownlint:
-    enabled: true
   pep8:
+    enabled: true         
+  radon: 
     enabled: true
-  radon:
-    enabled: true
+  markdownlint:
+    enabled: true          
+
+# Ratings
 ratings:
   paths:
-  - "**.inc"
-  - "**.module"
-  - "**.py"
\ No newline at end of file
+    - "**.py"    # default for enable Radon analysis
+    - "**.md"
+    - "**.inc"
+    - "**.module"
+    
+# List the files or directories excluded from analysis.
+exclude_paths:
+- dist/**
+- build/**    
diff --git a/test/__init__.py b/test/__init__.py
index 4f7a4c8..00ff8b8 100644
--- a/test/__init__.py
+++ b/test/__init__.py
@@ -1,11 +1,15 @@
 import decimal
 import json
 import os
-import unittest
 import datetime
 
 from smtpapi import SMTPAPIHeader
 
+try:
+    import unittest2 as unittest
+except ImportError:
+    import unittest
+
 
 class TestSMTPAPI(unittest.TestCase):
 
@@ -101,8 +105,7 @@ class TestRepository(unittest.TestCase):
     def setUp(self):
 
         self.required_files = [
-            ['./Dockerfile', './docker/Dockerfile'],
-            ['./docker-compose.yml', './docker/docker-compose.yml'],
+            './Dockerfile',
             './.codeclimate.yml',
             './.env_sample',
             './ISSUE_TEMPLATE.md',