作为Docker应用程序运行时，带有React.Aspnet错误的ASP.NET Core 2.1 Web应用程序

Question

我有一个带有React.aspnet的ASP.NET Core 2.1 Web应用程序。在IIS中运行时，它可以完美运行。但是当我在Docker中运行它时，应用程序仍然可以成功运行，但是带有React的视图页面失败，并显示以下错误：

  fail: Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddleware[1]
      An unhandled exception has occurred while executing the request.
React.TinyIoC.TinyIoCResolutionException: Unable to resolve type: React.ReactEnvironment ---> React.TinyIoC.TinyIoCResolutionException: Unable to resolve type: React.JavaScriptEngineFactory ---> JavaScriptEngineSwitcher.Core.JsEngineLoadException: Failed to create instance of the ChakraCoreJsEngine. Most likely it happened, because the 'libChakraCore.so' assembly or one of its dependencies was not found. Try to install the JavaScriptEngineSwitcher.ChakraCore.Native.linux-x64 package via NuGet. ---> System.DllNotFoundException: Unable to load shared library 'ChakraCore' or one of its dependencies. In order to help diagnose loading problems, consider setting the LD_DEBUG environment variable: libChakraCore: cannot open shared object file: No such file or directory
   at JavaScriptEngineSwitcher.ChakraCore.JsRt.NativeMethods.JsCreateRuntime(JsRuntimeAttributes attributes, JsThreadServiceCallback threadService, JsRuntime& runtime)
   at JavaScriptEngineSwitcher.ChakraCore.ChakraCoreJsEngine.<>c__DisplayClass10_1.<.ctor>b__0()
   at JavaScriptEngineSwitcher.ChakraCore.ScriptDispatcher.<>c__DisplayClass11_0.<Invoke>b__0()
   at JavaScriptEngineSwitcher.ChakraCore.ScriptDispatcher.StartThread()
--- End of stack trace from previous location where exception was thrown ---
   at JavaScriptEngineSwitcher.ChakraCore.ScriptDispatcher.InnnerInvoke(Func`1 del)
   at JavaScriptEngineSwitcher.ChakraCore.ScriptDispatcher.Invoke(Action action)
   at JavaScriptEngineSwitcher.ChakraCore.ChakraCoreJsEngine..ctor(ChakraCoreSettings settings)
   --- End of inner exception stack trace ---
   at JavaScriptEngineSwitcher.ChakraCore.ChakraCoreJsEngine..ctor(ChakraCoreSettings settings)
   at JavaScriptEngineSwitcher.ChakraCore.ChakraCoreJsEngineFactory.CreateEngine()
   at JSPool.JsPool`2.CreateEngine()
   at JSPool.JsPool`2.PopulateEngines()
   at JSPool.JsPool`2..ctor(JsPoolConfig`1 config)
   at React.JavaScriptEngineFactory.CreatePool()
   at React.JavaScriptEngineFactory..ctor(IJsEngineSwitcher jsEngineSwitcher, IReactSiteConfiguration config, ICache cache, IFileSystem fileSystem)
   at lambda_method(Closure , Object[] )
   at React.TinyIoC.TinyIoCContainer.ConstructType(Type requestedType, Type implementationType, ConstructorInfo constructor, NamedParameterOverloads parameters, ResolveOptions options)
   --- End of inner exception stack trace ---
   at React.TinyIoC.TinyIoCContainer.ConstructType(Type requestedType, Type implementationType, ConstructorInfo constructor, NamedParameterOverloads parameters, ResolveOptions options)
   at React.TinyIoC.TinyIoCContainer.SingletonFactory.GetObject(Type requestedType, TinyIoCContainer container, NamedParameterOverloads parameters, ResolveOptions options)
   at React.TinyIoC.TinyIoCContainer.ResolveInternal(TypeRegistration registration, NamedParameterOverloads parameters, ResolveOptions options)
   at React.TinyIoC.TinyIoCContainer.ConstructType(Type requestedType, Type implementationType, ConstructorInfo constructor, NamedParameterOverloads parameters, ResolveOptions options)
   --- End of inner exception stack trace ---
   at React.TinyIoC.TinyIoCContainer.ConstructType(Type requestedType, Type implementationType, ConstructorInfo constructor, NamedParameterOverloads parameters, ResolveOptions options)
   at React.TinyIoC.TinyIoCContainer.CustomObjectLifetimeFactory.GetObject(Type requestedType, TinyIoCContainer container, NamedParameterOverloads parameters, ResolveOptions options)
   at React.TinyIoC.TinyIoCContainer.ResolveInternal(TypeRegistration registration, NamedParameterOverloads parameters, ResolveOptions options)
   at React.TinyIoC.TinyIoCContainer.Resolve[ResolveType]()
   at React.AspNet.BabelFileMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddleware.Invoke(HttpContext context)

尝试了许多解决方案，但是没有用。我的nuget包如下所示：

我的Dockerfile如下所示：

    FROM mcr.microsoft.com/dotnet/core/sdk:2.1 AS build
WORKDIR /app

EXPOSE 80

# copy csproj and restore as distinct layers
COPY *.sln .
COPY *.csproj ./
RUN dotnet restore

# copy everything else and build app
COPY . ./
WORKDIR /app

RUN apt-get update && apt-get install -y --no-install-recommends apt-utils
RUN curl -sL https://deb.nodesource.com/setup_8.x | bash - && apt-get install -yq nodejs build-essential
RUN npm install -g npm
RUN npm install 

RUN dotnet publish -c Release -o ./out

FROM mcr.microsoft.com/dotnet/core/aspnet:2.1 AS runtime
WORKDIR /app
COPY --from=build /app/out ./
ENTRYPOINT ["dotnet", "app.dll"]

任何人都可以提供有关可能是什么问题的提示吗？

Answer 1

我设法通过安装不同操作系统特定版本的 JavaScriptEngineSwitcher.ChakraCore 来解决此问题。

<PackageReference Include="JavaScriptEngineSwitcher.ChakraCore.Native.linux-x64" Version="3.0.9" />
<PackageReference Include="JavaScriptEngineSwitcher.ChakraCore.Native.win-x64" Version="3.0.9" />
<PackageReference Include="JavaScriptEngineSwitcher.ChakraCore.Native.win-x86" Version="3.0.9" />
<PackageReference Include="JavaScriptEngineSwitcher.ChakraCore.Native.osx-x64" Version="3.0.9" />

根据ChakraCore的wiki page：

  

此软件包不包含的本机实现   ChakraCore。因此，您需要选择并安装最多的   适用于您平台的软件包。

通过安装所有版本，任何拉过此软件包的人都可以在不同的OS上运行并构建docker映像，而无需再次担心软件包的依赖性。