为什么此 dotnet 测试运行仅在 Docker 容器中崩溃？

Question

我有这个 .NET Core 1.1 解决方案，包括一个 ASP.NET Core 项目和一个 NUnit 测试项目。每个项目都有必要的属性（如有必要，我可以显示更多）。

<PropertyGroup>
    <TargetFramework>netcoreapp1.1</TargetFramework>
    <RuntimeFrameworkVersion>1.1.1</RuntimeFrameworkVersion>
</PropertyGroup>

我可以在本地 (Windows 10) 恢复、构建和运行测试套件，没有任何问题。

$ dotnet restore
Restoring packages for...
Restore completed in...
Generating MSBuild file...

$ dotnet build
Microsoft (R) Build Engine version 15.3.409.57025 for .NET Core
Copyright (C) Microsoft Corporation. All rights reserved.

  Example -> ...
  Test -> ...

Build succeeded.
    0 Warning(s)
    0 Error(s)

Time Elapsed ...

$ cd test/

$ dotnet test
Build started, please wait...
Build completed.

Test run for ...
Microsoft (R) Test Execution Command Line Tool Version 15.3.0-preview-20170628-02
Copyright (c) Microsoft Corporation.  All rights reserved.

Starting test execution, please wait...
NUnit Adapter 3.8.0.0: Test execution started
Running all tests in ...
NUnit3TestExecutor converted 11 of 11 NUnit test cases

Total tests: 11. Passed: 11. Failed: 0. Skipped: 0.
Test Run Succeeded.
Test execution time: ...

测试套件使用 NUnit 3，我使用的是所有最新的稳定版本。这是有趣的包参考。

<PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.3.0" />
<PackageReference Include="Microsoft.DotNet.InternalAbstractions" Version="1.0.0" />
<PackageReference Include="Microsoft.AspNet.WebApi.Client" Version="5.2.3" />
<PackageReference Include="FluentAssertions" Version="4.19.3" />
<PackageReference Include="Microsoft.AspNetCore.TestHost" Version="1.1.3" />
<PackageReference Include="NUnit" Version="3.8.1" />
<PackageReference Include="NUnit3TestAdapter" Version="3.8.0" />

但是，当我从 .NET Core SDK Docker 映像/容器运行测试时，它们会严重失败！

活动的测试运行已中止。原因：无法与测试主机进程通信。

这是简单的 Dockerfile

FROM microsoft/dotnet:1.1-sdk
WORKDIR /app
COPY . .

恢复和构建工作找到了，但测试中止！

$ docker image build --tag example:latest .
...
$ docker container run --rm -it example:latest
root@abcdef12345:/app# dotnet restore
...
root@abcdef12345:/app# dotnet build
...
root@abcdef12345:/app# cd test/
root@abcdef12345:/app# dotnet test
...
Microsoft (R) Test Execution Command Line Tool Version 15.0.0.0
Copyright (c) Microsoft Corporation.  All rights reserved.

Starting test execution, please wait...
NUnit Adapter 3.8.0.0: Test execution started
Running all tests in ...
NUnit3TestExecutor converted 11 of 11 NUnit test cases
The active test run was aborted. Reason: Unable to communicate with test host process.

搜索此错误消息让我无处可去。我不确定如何调试测试运行中止。更高级别的冗长不会打印任何有用的东西。让我知道我可以尝试获取更多信息、消除可能性并提供更多有用信息！