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c# - GenerateRuntimeConfigurationFiles 任务意外失败

问题描述

构建 docker 映像时出现不一致的错误。如果我继续运行 docker build，这大约有 3 次失败。

完整的错误是：

/usr/share/dotnet/sdk/2.1.301/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.targets(171,5): error MSB4018: The "GenerateRuntimeConfigurationFiles" task failed unexpectedly. [/app/MyProject.Api/MyProject.Api.csproj]
/usr/share/dotnet/sdk/2.1.301/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.targets(171,5): error MSB4018: System.IO.IOException: The process cannot access the file '/app/MyProject.Api/bin/Release/netcoreapp2.1/MyProject.Api.runtimeconfig.json' because it is being used by another process. [/app/MyProject.Api/MyProject.Api.csproj]
/usr/share/dotnet/sdk/2.1.301/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.targets(171,5): error MSB4018:    at System.IO.FileStream.Init(FileMode mode, FileShare share) [/app/MyProject.Api/MyProject.Api.csproj]
/usr/share/dotnet/sdk/2.1.301/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.targets(171,5): error MSB4018:    at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options) [/app/MyProject.Api/MyProject.Api.csproj]
/usr/share/dotnet/sdk/2.1.301/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.targets(171,5): error MSB4018:    at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize) [/app/MyProject.Api/MyProject.Api.csproj]
/usr/share/dotnet/sdk/2.1.301/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.targets(171,5): error MSB4018:    at System.IO.File.Create(String path) [/app/MyProject.Api/MyProject.Api.csproj]
/usr/share/dotnet/sdk/2.1.301/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.targets(171,5): error MSB4018:    at Microsoft.NET.Build.Tasks.GenerateRuntimeConfigurationFiles.WriteToJsonFile(String fileName, Object value) [/app/MyProject.Api/MyProject.Api.csproj]
/usr/share/dotnet/sdk/2.1.301/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.targets(171,5): error MSB4018:    at Microsoft.NET.Build.Tasks.GenerateRuntimeConfigurationFiles.WriteRuntimeConfig(ProjectContext projectContext) [/app/MyProject.Api/MyProject.Api.csproj]
/usr/share/dotnet/sdk/2.1.301/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.targets(171,5): error MSB4018:    at Microsoft.NET.Build.Tasks.GenerateRuntimeConfigurationFiles.ExecuteCore() [/app/MyProject.Api/MyProject.Api.csproj]
/usr/share/dotnet/sdk/2.1.301/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.targets(171,5): error MSB4018:    at Microsoft.NET.Build.Tasks.TaskBase.Execute() [/app/MyProject.Api/MyProject.Api.csproj]
/usr/share/dotnet/sdk/2.1.301/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.targets(171,5): error MSB4018:    at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute() [/app/MyProject.Api/MyProject.Api.csproj]
/usr/share/dotnet/sdk/2.1.301/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.targets(171,5): error MSB4018:    at Microsoft.Build.BackEnd.TaskBuilder.ExecuteInstantiatedTask(ITaskExecutionHost taskExecutionHost, TaskLoggingContext taskLoggingContext, TaskHost taskHost, ItemBucket bucket, TaskExecutionMode howToExecuteTask) [/app/MyProject.Api/MyProject.Api.csproj]
  MyProject.Api -> /app/MyProject.Api/bin/Release/netcoreapp2.1/MyProject.Api.dll
  MyProject.Api -> /app/MyProject.Api/out/
The command '/bin/sh -c ps -ef && dotnet publish --configuration Release --no-restore --framework netcoreapp2.1 --output out' returned a non-zero code: 1

困扰我的是这一行 The process cannot access the file '/app/MyProject.Api/bin/Release/netcoreapp2.1/MyProject.Api.runtimeconfig.json' 因为它正在被另一个进程使用。[/app/MyProject.Api/MyProject.Api.csproj]

还有什么其他进程可以锁定文件？

当构建过程没有失败时，每次都会出现此警告：

/usr/share/dotnet/sdk/2.1.301/Microsoft.Common.CurrentVersion.targets(4560,5): warning MSB3026: Could not copy "/app/MyProject.Api/Keys/public.pem" to "bin/Release/netcoreapp2.1/Keys/public.pem". Beginning retry 1 in 1000ms. The process cannot access the file '/app/MyProject.Api/bin/Release/netcoreapp2.1/Keys/public.pem' because it is being used by another process.  [/app/MyProject.Api/MyProject.Api.csproj]

这看起来像同样的问题，但它自己解决了，并构建了图像，并且 public.pem 文件已被正确复制。

我的码头文件：

FROM microsoft/dotnet:2.1-sdk AS build-env
WORKDIR /app

COPY . ./

RUN dotnet restore --source https://api.nuget.org/v3/index.json

RUN dotnet publish --configuration Release --no-restore --framework netcoreapp2.1 --output out

FROM microsoft/dotnet:2.1.1-aspnetcore-runtime as runtime
WORKDIR /app

COPY --from=build-env /app/MyProject.Api/out .
ENTRYPOINT ["dotnet", "MyProject.Api.dll"]

我像这样运行 docker build ： docker build --no-cache -t myproject:test -f Dockerfile 。

我在 github 上发现的唯一类似问题是在大多数情况下都可以正常工作的持续失败，但经常失败，我仍然不明白为什么。

任何帮助表示赞赏。

标签： c#docker.net-coredockerfiledocker-for-windows

解决方案

我认为 Dockerfile 中的一些命令需要更改。

FROM microsoft/dotnet:2.1-sdk AS build-env
WORKDIR /app

COPY *.csproj ./
RUN dotnet restore

# Copy everything else and build
COPY . ./
RUN dotnet publish -c Release -o out

# Build runtime image
FROM microsoft/dotnet:2.1.1-aspnetcore-runtime
WORKDIR /app
COPY --from=build-env /app/out .
ENTRYPOINT ["dotnet", "MyProject.Api.dll"]

参考：

  1. https://docs.docker.com/engine/examples/dotnetcore/#prerequisites

  2. https://raw.githubusercontent.com/dotnet/dotnet-docker/master/samples/dotnetapp/Dockerfile

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