How to deploy WinForm application with its db using EF6

Question

I just finished building a C# WinForms application, and after publishing it using Microsoft Visual Studio Installer projects, I have realized that the database has not been added to the application...

 

How can I attach the database along with the .EXE file? I have selected the needed prerequisites (.NET and SQL Server Express).

 

I am using Entity Framework 6 (EF6) and my database has a username and password (SQL Server authentication).

 

I have tried to include the .mdf file in the project, but no results.

 

I have also tried to include SQL(localDB), but it throws an exception: make sure to include entity framework connection string...