Microservices: How to set network path of folder structure

Currently I am using 1. Windows 7 2. Docker Toolbox 3. Visual studio 2017 4. Asp.net core 2.0 Web API

Problem:- First I have created an asp.net core 2.0 web API, which uses a physical path for reading files. It was running perfectly before hosting it to docker. Then I have enabled support for Docker, build and run the image. When i try to hit the URL it is giving me exception that "could not find the part of path"

You can see How I declared a path here. Is that right way to do this? Or do I need to make some changes to dockerfile?

private readonly string _networkPath = Directory.GetCurrentDirectory() + @"\TestData\daba";