Updated CMakeLists.txt to include rpm-docker directory

CMakeLists.txt

-# Copyright (c) 2006, 2014, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2006, 2015, Oracle and/or its affiliates. All rights reserved.
 # 
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -415,6 +415,7 @@ IF(NOT WITHOUT_SERVER)
   ENDIF()
   ADD_SUBDIRECTORY(packaging/rpm-oel)
   ADD_SUBDIRECTORY(packaging/rpm-sles)
+  ADD_SUBDIRECTORY(packaging/rpm-docker)
 ENDIF()
 
 INCLUDE(cmake/abi_check.cmake)