Bluemix Local：如何将现有的本地DB2数据库添加为服务？

I am using Bluemix Local and have an existing on-premises database (DB2 LUW) that I want to use with a Cloud Foundry application. How can I make that database "testDB" available as a service, so that my app can use the VCAP_SERVICES variable to access that database?I am using Bluemix Local and have an existing o