Replace Alternative method HttpContext.Current.Server in Asp.netCore

using different type alternative for

but not working...

HttpContext.Current.Server.MapPath();

Alternative--

1) string filePath = HostingEnvironment.MapPath("~/email/teste.html");
2) string filePath = Path.Combine(HttpRuntime.AppDomainAppPath, "email/teste.html");

3) Path.Combine(HttpRuntime.AppDomainAppPath, "~\\Temp\\")