diff --git a/nginx_proxy.py b/nginx_proxy.py
index 6b54c4b..8f29887 100755
--- a/nginx_proxy.py
+++ b/nginx_proxy.py
@@ -123,6 +123,12 @@ def get_docker_id():
             if index != -1:
                 id = line[index+7:-6]
                 break
+            index = line.find('docker/')
+            if index != -1:
+                id = line[index+7:]
+                break
+    if id == '':
+        logging.error('could not determine container\'s id!')
     return id
 
 def get_listen_ips():