如何使用TFS构建gulp css文件（使用Task Runner Explorer进行本地构建）

We have the following issue in our build system: We build an ASP.NET project which has many scss files.. We want to compile them using Gulp. When working local, no problem, we use the Task Runner Explorer in VS2015 to automate the pre-build event, but, when building using TFS, we don't have access to this tool and thus it leaves us with no css file.We have the following issue in our build system