Add SQLite dtabase file from a class library to ASP.NET Core MVC output directory on project build

I created a class library project and put my SQLite database in it, and set these lines in the .csproj file:

<ItemGroup><Content Include="Data\DataBase\locations.db"><CopyToOutputDirectory>Always</CopyToOutputDirectory></Content></ItemGroup>

If I locally reference that class library to my main project (ASP.NET Core), it works fine and on every build it will copy the database file to this directory:

***\bin\Debug\net5.0\Data\DataBase

But when I publish the class library to NuGet, and install it in my main project, it doesn't copy the file.

Any help why this is happening and what should I do?

This is my package in NuGet package explorer