"Minimal API" does not handle static files

[JohnyL]

As announced here, ASP.NET Core introduces minimal API for creating web apps. I decided to try it out with two simple test apps.

1. Serving plain index.html file

Here's the sample project. Does not work. I get error: This localhost page can't be found.
Upon investigation I found out that WebRootPath is the same as ContentRootPath (according to web root definition, web root path is, by default, content path plus wwwroot):

var builder = WebApplication.CreateBuilder(args);
var contentRootPath = builder.Environment.ContentRootPath; // C:\minapi
var webRootPath = builder.Environment.WebRootPath;         // C:\minapi

Changing WebRootPath to C:\minapi\wwwroot didn't work:

builder.Environment.WebRootPath = Path.Combine(builder.Environment.ContentRootPath, "wwwroot");

2. Razor Pages

This time I have included Razor Pages (sample project). This time things got interesting: the razor page was successfully generated, it appeared in browser, but neither Bootstrap file nor JavaScript file were served!

Further technical details

• ASP.NET Core version: 6.0.100-preview.4.21255.9

• Include the output of dotnet --info

  Output

  .NET SDK (reflecting any global.json):
  Version: 6.0.100-preview.4.21255.9
  Commit: 950e4949a7

  Runtime Environment:
  OS Name: Windows
  OS Version: 10.0.19043
  OS Platform: Windows
  RID: win10-x64
  Base Path: C:\Program Files\dotnet\sdk\6.0.100-preview.4.21255.9\

  Host (useful for support):
  Version: 6.0.0-preview.4.21253.7
  Commit: bfd6048a60

  .NET SDKs installed:
  5.0.102 [C:\Program Files\dotnet\sdk]
  5.0.202 [C:\Program Files\dotnet\sdk]
  5.0.300-preview.21258.4 [C:\Program Files\dotnet\sdk]
  6.0.100-preview.4.21255.9 [C:\Program Files\dotnet\sdk]

  .NET runtimes installed:
  Microsoft.AspNetCore.All 2.1.28 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.App 2.1.28 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 3.1.15 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 5.0.2 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 5.0.5 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 6.0.0-preview.3.21201.13 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 6.0.0-preview.4.21253.5 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 2.1.28 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 3.1.15 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 5.0.2 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 5.0.5 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 6.0.0-preview.3.21201.4 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 6.0.0-preview.4.21253.7 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.WindowsDesktop.App 3.1.15 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 5.0.2 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 5.0.5 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 6.0.0-preview.3.21201.3 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 6.0.0-preview.4.21254.5 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

• The IDE (VS / VS Code/ VS4Mac): Visual Studio Community 2019 Preview 16.11.0 Preview 1.0

[DamianEdwards]

Likely dupe of #32415. See that issue for workaround until a preview with the fix ships.

[JohnyL]

@DamianEdwards Thanks, Damian, the workaround worked perfectly! 😎