Cannot dotnet run templates created via build.cmd

[isaacrlevin]

Describe the bug

When contributing to the templates, the steps to build and create templates to test does not work as expected following the steps in the README

To Reproduce

Steps to reproduce the behavior:

1. Follow steps to build templates from source in this repo
2. Attempt to dotnet run generated template

Expected behavior

Get below error, looks like the project is not pointed to the framework built from source

It was not possible to find any compatible framework version                                                            The specified framework 'Microsoft.AspNetCore.App', version '3.0.0-dev' was not found.
  - The following frameworks were found:
      2.1.9 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
      2.1.11 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
      2.2.3 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
      2.2.5 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
      3.0.0-preview5-19227-01 at [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]

You can resolve the problem by installing the specified framework and/or SDK.

The .NET Core frameworks can be found at:
  - https://aka.ms/dotnet-download

Additional context

.NET Core SDK (reflecting any global.json):
Version:   3.0.100-preview5-011568
Commit:    b487ff10aa

Runtime Environment:
 OS Name:     Windows
 OS Version:  10.0.18362
 OS Platform: Windows
 RID:         win10-x64
 Base Path:   C:\Program Files\dotnet\sdk\3.0.100-preview5-011568\

Host (useful for support):
  Version: 3.0.0-preview5-27626-15
  Commit:  61f30f5a23

.NET Core SDKs installed:

2.1.507 [C:\Program Files\dotnet\sdk]
2.1.604 [C:\Program Files\dotnet\sdk]
2.1.700-preview-009618 [C:\Program Files\dotnet\sdk]
2.1.700 [C:\Program Files\dotnet\sdk]
2.1.800-preview-009677 [C:\Program Files\dotnet\sdk]
2.2.204 [C:\Program Files\dotnet\sdk]
2.2.300-preview-010067 [C:\Program Files\dotnet\sdk]
2.2.300 [C:\Program Files\dotnet\sdk]
2.2.400-preview-010195 [C:\Program Files\dotnet\sdk]
3.0.100-preview5-011568 [C:\Program Files\dotnet\sdk]
.NET Core runtimes installed:
Microsoft.AspNetCore.All 2.1.9 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.All 2.1.11 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.All 2.2.3 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.All 2.2.5 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.App 2.1.9 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 2.1.11 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 2.2.3 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 2.2.5 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 3.0.0-preview5-19227-01 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 2.1.9 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 2.1.11 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 2.2.5 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 3.0.0-preview5-27626-15 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 3.0.0-preview5-27626-15 

[C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
To install additional .NET Core runtimes or SDKs:
https://aka.ms/dotnet-download 

[natemcmaster]

@ryanbrandenburg @mkArtakMSFT it looks like something in the project templates README needs to be updated. Can you take a look at this one?

[ryanbrandenburg]

@isaac2004 by follow steps to build do you mean these steps?

[isaacrlevin]

@ryanbrandenburg yep, not sure what is going wrong

[ryanbrandenburg]

If I had to guess based off your error message the . .\activate.ps1 script didn't succeed for some reason. If it had your ".NET Core runtimes installed:" area would contain some entries like $YourRepo.dotnet\x64* before you do "dotnet run" is something pre-pended to your powershell prompt (for me it's (AspNetCore))?

[isaacrlevin]

@ryanbrandenburg yep it is