C# 遇到致命错误'；libhostpolicy.so'；必修的

我是docker的新手，运行dotnet core 3.1项目，遵循以下教程（来自标题“创建容器”）：

我遇到了以下错误：

在“/App/”中找不到执行应用程序所需的库“libhostpolicy.so”。无法作为自包含应用程序运行。如果该应用程序依赖于框架，请添加/app/CurseOfTheRandomness.runtimeconfig.json文件，指定适当的框架

现在我知道这个问题已经有几个线程了：

我尝试了所有这些和这些的多种组合，但我一直在犯同样的错误

.csproj文件：

<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
  <PropertyGroup>
    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
    <ProjectGuid>{BDE4CAC4-D370-4E15-8A4C-8748034293D4}</ProjectGuid>
    <OutputType>Exe</OutputType>
    <RootNamespace>CurseOfTheRandomness</RootNamespace>
    <AssemblyName>CurseOfTheRandomness</AssemblyName>
    <TargetFrameworkVersion>v4.7.2</TargetFrameworkVersion>
    <GenerateRuntimeConfigurationFiles>true</GenerateRuntimeConfigurationFiles>
    <FileAlignment>512</FileAlignment>
    <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
    <Deterministic>true</Deterministic>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
    <PlatformTarget>AnyCPU</PlatformTarget>
    <DebugSymbols>true</DebugSymbols>
    <DebugType>full</DebugType>
    <Optimize>false</Optimize>
    <OutputPath>bin\Debug\</OutputPath>
    <DefineConstants>DEBUG;TRACE</DefineConstants>
    <ErrorReport>prompt</ErrorReport>
    <WarningLevel>4</WarningLevel>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
    <PlatformTarget>AnyCPU</PlatformTarget>
    <DebugType>pdbonly</DebugType>
    <Optimize>true</Optimize>
    <OutputPath>bin\Release\</OutputPath>
    <DefineConstants>TRACE</DefineConstants>
    <ErrorReport>prompt</ErrorReport>
    <WarningLevel>4</WarningLevel>
  </PropertyGroup>
  <ItemGroup>
    <Reference Include="Discord.Net.Commands, Version=2.4.0.0, Culture=neutral, processorArchitecture=MSIL">
      <HintPath>..\packages\Discord.Net.Commands.2.4.0\lib\net461\Discord.Net.Commands.dll</HintPath>
    </Reference>
    <Reference Include="Discord.Net.Core, Version=2.4.0.0, Culture=neutral, processorArchitecture=MSIL">
      <HintPath>..\packages\Discord.Net.Core.2.4.0\lib\net461\Discord.Net.Core.dll</HintPath>
    </Reference>
    <Reference Include="Discord.Net.Rest, Version=2.4.0.0, Culture=neutral, processorArchitecture=MSIL">
      <HintPath>..\packages\Discord.Net.Rest.2.4.0\lib\net461\Discord.Net.Rest.dll</HintPath>
    </Reference>
    <Reference Include="Discord.Net.Webhook, Version=2.4.0.0, Culture=neutral, processorArchitecture=MSIL">
      <HintPath>..\packages\Discord.Net.Webhook.2.4.0\lib\netstandard2.0\Discord.Net.Webhook.dll</HintPath>
    </Reference>
    <Reference Include="Discord.Net.WebSocket, Version=2.4.0.0, Culture=neutral, processorArchitecture=MSIL">
      <HintPath>..\packages\Discord.Net.WebSocket.2.4.0\lib\net461\Discord.Net.WebSocket.dll</HintPath>
    </Reference>
    <Reference Include="Google.Apis, Version=1.51.0.0, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab, processorArchitecture=MSIL">
      <HintPath>..\packages\Google.Apis.1.51.0\lib\net45\Google.Apis.dll</HintPath>
    </Reference>
    <Reference Include="Google.Apis.Auth, Version=1.51.0.0, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab, processorArchitecture=MSIL">
      <HintPath>..\packages\Google.Apis.Auth.1.51.0\lib\net45\Google.Apis.Auth.dll</HintPath>
    </Reference>
    <Reference Include="Google.Apis.Auth.PlatformServices, Version=1.51.0.0, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab, processorArchitecture=MSIL">
      <HintPath>..\packages\Google.Apis.Auth.1.51.0\lib\net45\Google.Apis.Auth.PlatformServices.dll</HintPath>
    </Reference>
    <Reference Include="Google.Apis.Core, Version=1.51.0.0, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab, processorArchitecture=MSIL">
      <HintPath>..\packages\Google.Apis.Core.1.51.0\lib\net45\Google.Apis.Core.dll</HintPath>
    </Reference>
    <Reference Include="Google.Apis.PlatformServices, Version=1.51.0.0, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab, processorArchitecture=MSIL">
      <HintPath>..\packages\Google.Apis.1.51.0\lib\net45\Google.Apis.PlatformServices.dll</HintPath>
    </Reference>
    <Reference Include="Google.Apis.YouTube.v3, Version=1.51.0.2294, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab, processorArchitecture=MSIL">
      <HintPath>..\packages\Google.Apis.YouTube.v3.1.51.0.2294\lib\net45\Google.Apis.YouTube.v3.dll</HintPath>
    </Reference>
    <Reference Include="Microsoft.Bcl.AsyncInterfaces, Version=5.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51, processorArchitecture=MSIL">
      <HintPath>..\packages\Microsoft.Bcl.AsyncInterfaces.5.0.0\lib\net461\Microsoft.Bcl.AsyncInterfaces.dll</HintPath>
    </Reference>
    <Reference Include="Microsoft.Extensions.DependencyInjection, Version=5.0.0.1, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL">
      <HintPath>..\packages\Microsoft.Extensions.DependencyInjection.5.0.1\lib\net461\Microsoft.Extensions.DependencyInjection.dll</HintPath>
    </Reference>
    <Reference Include="Microsoft.Extensions.DependencyInjection.Abstractions, Version=5.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL">
      <HintPath>..\packages\Microsoft.Extensions.DependencyInjection.Abstractions.5.0.0\lib\net461\Microsoft.Extensions.DependencyInjection.Abstractions.dll</HintPath>
    </Reference>
    <Reference Include="Newtonsoft.Json, Version=12.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
      <HintPath>..\packages\Newtonsoft.Json.12.0.3\lib\net45\Newtonsoft.Json.dll</HintPath>
    </Reference>
    <Reference Include="System" />
    <Reference Include="System.Collections.Immutable, Version=1.2.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
      <HintPath>..\packages\System.Collections.Immutable.1.3.1\lib\portable-net45+win8+wp8+wpa81\System.Collections.Immutable.dll</HintPath>
    </Reference>
    <Reference Include="System.Core" />
    <Reference Include="System.Interactive.Async, Version=4.0.0.0, Culture=neutral, PublicKeyToken=94bc3704cddfc263, processorArchitecture=MSIL">
      <HintPath>..\packages\System.Interactive.Async.4.0.0\lib\net461\System.Interactive.Async.dll</HintPath>
    </Reference>
    <Reference Include="System.Linq.Async, Version=4.0.0.0, Culture=neutral, PublicKeyToken=94bc3704cddfc263, processorArchitecture=MSIL">
      <HintPath>..\packages\System.Linq.Async.4.0.0\lib\net461\System.Linq.Async.dll</HintPath>
    </Reference>
    <Reference Include="System.Runtime.CompilerServices.Unsafe, Version=4.0.4.1, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
      <HintPath>..\packages\System.Runtime.CompilerServices.Unsafe.4.5.3\lib\net461\System.Runtime.CompilerServices.Unsafe.dll</HintPath>
    </Reference>
    <Reference Include="System.Threading.Tasks.Extensions, Version=4.2.0.1, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51, processorArchitecture=MSIL">
      <HintPath>..\packages\System.Threading.Tasks.Extensions.4.5.4\lib\net461\System.Threading.Tasks.Extensions.dll</HintPath>
    </Reference>
    <Reference Include="System.Xml.Linq" />
    <Reference Include="System.Data.DataSetExtensions" />
    <Reference Include="Microsoft.CSharp" />
    <Reference Include="System.Data" />
    <Reference Include="System.Net.Http" />
    <Reference Include="System.Xml" />
  </ItemGroup>
  <ItemGroup>
    <Compile Include="Modules\Commands.cs" />
    <Compile Include="Program.cs" />
    <Compile Include="Properties\AssemblyInfo.cs" />
  </ItemGroup>
  <ItemGroup>
    <None Include="App.config" />
    <None Include="packages.config" />
  </ItemGroup>
  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
</Project>

---

我知道有多个实例会发生此错误。我仍然想知道：为什么、如何以及何时发生此错误？

请将文本显示为文本而不是屏幕截图。作为文本阅读要容易得多。另外，请尝试用一个简单的例子来重现这一点——我希望您能够用一个简单的控制台应用程序来展示这一点，而不是一个依赖性巨大的应用程序。此外，尽管构建了一个Linux docker映像，但看起来您仍在使用.NET 4.6.1引用。我不希望你需要所有这些

元素……我不确定你指的是什么，举个简单的例子，你的意思是我在同一个框架上创建一个新的控制台应用程序，制作一个docker映像，然后在docker容器上运行它吗？也是的，我确实需要所有这些引用，它们引用的是我在项目中使用的依赖项。我确实运行了dotnet版本，它是3.1.114，所以idk是关于.NET4.6.1的。感谢您的回复，我相应地更改了我的线程，我的意思是“演示问题的最小可能示例”。看起来您有一个旧式项目，而不是一个更易于使用且更适合.NET Core的SDK样式的项目，这并没有帮助。但是您的项目实际上是针对.NET4.7.2的，这与您试图在Dockerfile中使用的.NETCore不同。如果您确实在尝试使用.NET Core，我建议您使用

dotnet new

启动一个新项目，并从中开始工作。。。这种.NET Framework和.NET Core的混合将非常混乱和冗长，没有任何好处。（对于.NET Core，我怀疑您的项目文件可能有大约20行长，而不是您目前的大文件…然后它将匹配您在Dockerfile中使用的内容。）您是对的，我没有使用.NET Core Framework。。。我想是的，直到我再看一眼。现在我确实将项目目标更改为3.1，并遇到了一个不同的错误，但这可能会导致另一个线程。

FROM mcr.microsoft.com/dotnet/core/sdk:3.1
COPY ./bin/Debug/ App/
COPY ./Properties App/
WORKDIR ./App
ENV COMPlus_EnableDiagnostics=0
ENTRYPOINT ["dotnet","CurseOfTheRandomness.exe"]