dotnet CLI does not work under gVisor

[saquibmian]

Describe the bug

I am trying to use mcr.microsoft.com/dotnet/sdk under a gVisor environment on arm64 (Apple Silicon). Most commands fail with the following error:

Fatal error. AdvSimd processor support required.
Aborted

To Reproduce

You will need gVisor set up as an additional container runtime.

This command succeeds:

$ docker run -it --runtime runsc mcr.microsoft.com/dotnet/sdk:8.0.401-bookworm-slim dotnet    

Usage: dotnet [options]
Usage: dotnet [path-to-application]

Options:
  -h|--help         Display help.
  --info            Display .NET information.
  --list-sdks       Display the installed SDKs.
  --list-runtimes   Display the installed runtimes.

path-to-application:
  The path to an application .dll file to execute.

This command fails:

$ docker run -it --runtime runsc mcr.microsoft.com/dotnet/sdk:8.0.401-bookworm-slim dotnet --version
Fatal error. AdvSimd processor support required.

dotnet new|build|pack also fail with the same error.

Exceptions (if any)

The same commands (dotnet --version and others) work for the following images:

• mcr.microsoft.com/dotnet/sdk:7.0-bookworm-slim
• mcr.microsoft.com/dotnet/sdk:6.0-bookworm-slim

Further technical details

I am targeting the arm64 arch (running under Apple Silicon). I have not tested this under any other arch.

dotnet --info fails under sdk:8, but sdk:7 returns the following:

$ docker run -it --runtime runsc mcr.microsoft.com/dotnet/sdk:7.0-bookworm-slim dotnet --info
.NET SDK:
 Version:   7.0.410
 Commit:    8b4848c3b2

Runtime Environment:
 OS Name:     debian
 OS Version:  12
 OS Platform: Linux
 RID:         debian.12-arm64
 Base Path:   /usr/share/dotnet/sdk/7.0.410/

Host:
  Version:      7.0.20
  Architecture: arm64
  Commit:       0fb6ac59fb

.NET SDKs installed:
  7.0.410 [/usr/share/dotnet/sdk]

.NET runtimes installed:
  Microsoft.AspNetCore.App 7.0.20 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 7.0.20 [/usr/share/dotnet/shared/Microsoft.NETCore.App]

Other architectures found:
  None

Environment variables:
  Not set

global.json file:
  Not found

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  https://aka.ms/dotnet/info

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