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c# - 如何在Docker中运行.NET Core 3.1.3 x86 App

我有一个构建为x86的.NET Core 3.1.3 Web API项目。它必须是x86，因为它通过dllimport来使用x86 C++ DLL。在Docker之外，应用程序按预期运行。但是，一旦添加Windows Docker支持，它就会立即失败。我从SO研究中相信它失败了，因为Microsoft没有为.NET Core提供任何x86基本镜像。默认的Windows Docker基本镜像当前为mcr.microsoft.com/dotnet/core/aspnet:3.1-nanoserver-1903。

我尝试使用mcr.microsoft.com/windows/servercore:1909作为基本镜像，但是随后出现错误消息“无法启动程序:'C:\ Program Files \ dotnet \ dotnet.exe”。假定这是因为此exe在使用的基本镜像上不存在。并且，大概对于x86，实际上将需要“C:\ Program Files(x86)\ dotnet \ dotnet.exe”。

我当前的Dockerfile是:

FROM mcr.microsoft.com/windows/servercore:1909 AS base
WORKDIR /app
EXPOSE 80
EXPOSE 443

FROM mcr.microsoft.com/windows/servercore:1909 AS build
WORKDIR /src
COPY ["WAPTCoreWebService/WAPTCoreWebService.csproj", "WAPTCoreWebService/"]
RUN dotnet restore "WAPTCoreWebService/WAPTCoreWebService.csproj"
COPY . .
WORKDIR "/src/WAPTCoreWebService"
RUN dotnet build "WAPTCoreWebService.csproj" -c Release -o /app/build

FROM build AS publish
RUN dotnet publish "WAPTCoreWebService.csproj" -c Release -o /app/publish

FROM base AS final
WORKDIR /app
COPY --from=publish /app/publish .
ENTRYPOINT ["dotnet", "WAPTCoreWebService.dll"]

我是否正确解释了此错误。如果没有，那是什么意思？如果是这样，我如何添加支持以在此镜像中构建.NET Core应用程序的x86版本？我是否需要以某种方式下载并运行dotnet-runtime-3.1.3-win-x86.exe？如果是这样，怎么办？

更新 2020年4月29日

基于Matt Thalman的回答，我构建了一个自定义镜像，以包含x86版本的.NET Core SDK。 Docker文件为:
# escape=`

# Installer image
FROM mcr.microsoft.com/windows/servercore:1909 AS installer

SHELL ["powershell", "-Command", "$ErrorActionPreference = 'Stop'; $ProgressPreference = 'SilentlyContinue';"]

# Retrieve .NET Core SDK
RUN $dotnet_sdk_version = '3.1.201'; `
    Invoke-WebRequest -OutFile dotnet.zip https://dotnetcli.azureedge.net/dotnet/Sdk/$dotnet_sdk_version/dotnet-sdk-$dotnet_sdk_version-win-x86.zip; `
    $dotnet_sha512 = '48aa1afaf7a52effb367bbb14a66e2c3bf8da468025795daf0fa0d18e3b9650ba3bd23800c9965a4d4ec1d891afecbce51b2487730f1b0d6040ee7cb73a15ec6'; `
    if ((Get-FileHash dotnet.zip -Algorithm sha512).Hash -ne $dotnet_sha512) { `
        Write-Host 'CHECKSUM VERIFICATION FAILED!'; `
        exit 1; `
    }; `
    `
    Expand-Archive dotnet.zip -DestinationPath dotnet; `
    Remove-Item -Force dotnet.zip

# Install PowerShell global tool
RUN $powershell_version = '7.0.0'; `
    Invoke-WebRequest -OutFile PowerShell.Windows.x64.$powershell_version.nupkg https://pwshtool.blob.core.windows.net/tool/$powershell_version/PowerShell.Windows.x64.$powershell_version.nupkg; `
    $powershell_sha512 = '1980da63a4f6017235e7af810bfda66be8fa53d0475d147a8219a36c76a903af99adb6cd5309e3dadc610389ae3525bca1ca2d30e7a991640e924334fd4e4638'; `
    if ((Get-FileHash PowerShell.Windows.x64.$powershell_version.nupkg -Algorithm sha512).Hash -ne $powershell_sha512) { `
        Write-Host 'CHECKSUM VERIFICATION FAILED!'; `
        exit 1; `
    }; `
    `
    \dotnet\dotnet tool install --add-source . --tool-path \powershell --version $powershell_version PowerShell.Windows.x64; `
    \dotnet\dotnet nuget locals all --clear; `
    Remove-Item -Force PowerShell.Windows.x64.$powershell_version.nupkg; `
    Remove-Item -Path \powershell\.store\powershell.windows.x64\$powershell_version\powershell.windows.x64\$powershell_version\powershell.windows.x64.$powershell_version.nupkg -Force

# SDK image
FROM mcr.microsoft.com/windows/servercore:1909

ENV `
    # Enable detection of running in a container
    DOTNET_RUNNING_IN_CONTAINER=true `
    # Enable correct mode for dotnet watch (only mode supported in a container)
    DOTNET_USE_POLLING_FILE_WATCHER=true `
    # Skip extraction of XML docs - generally not useful within an image/container - helps performance
    NUGET_XMLDOC_MODE=skip `
    # PowerShell telemetry for docker image usage
    POWERSHELL_DISTRIBUTION_CHANNEL=PSDocker-DotnetCoreSDK-NanoServer-1909

# In order to set system PATH, ContainerAdministrator must be used
USER ContainerAdministrator
RUN setx /M PATH "%PATH%;C:\Program Files (x86)\dotnet;C:\Program Files\powershell"
USER ContainerUser

COPY --from=installer ["/dotnet", "/Program Files (x86)/dotnet"]

COPY --from=installer ["/powershell", "/Program Files/powershell"]

# Trigger first run experience by running arbitrary cmd
RUN dotnet help

这样就可以正常构建，并且最后的dotnet help命令可以正确执行。

我将应用程序Dockerfile更改为使用此自定义镜像作为基础镜像，并且它也可以很好地构建。当我从Visual Studio 2019运行此程序时，我收到与上面相同的错误(“无法启动程序:'C:\ Program Files \ dotnet \ dotnet.exe。”)。为什么VS仍在尝试使用x64入口点。该项目是针对x86平台构建的，生成的图像看起来不错。

我根据应用程序镜像和CMD创建了一个容器，并确认所有文件都在预期的位置，甚至从命令行运行dotnet applicationName.dll，应用程序开始运行。

当我尝试从Visual Studio运行时，它尝试通过以下方式运行图像:
docker run -dt -v "C:\Users\Valued Customer\onecoremsvsmon\16.5.0102.0:C:\remote_debugger:ro" -v "C:\Users\Valued Customer\AppData\Roaming\Microsoft\UserSecrets:C:\Users\ContainerUser\AppData\Roaming\Microsoft\UserSecrets:ro" -v "C:\Users\Valued Customer\AppData\Roaming\ASP.NET\Https:C:\Users\ContainerUser\AppData\Roaming\ASP.NET\Https:ro" -e "ASPNETCORE_URLS=https://+:443;http://+:80" -e "ASPNETCORE_ENVIRONMENT=Development" -e "ASPNETCORE_LOGGING__CONSOLE__DISABLECOLORS=true" -P --name WAPTCoreWebService_1 --entrypoint C:\remote_debugger\x64\msvsmon.exe waptcorewebservice /noauth /anyuser /silent /nostatus /noclrwarn /nosecuritywarn /nofirewallwarn /nowowwarn /fallbackloadremotemanagedpdbs /timeout:2147483646 /LogDebuggeeOutputToStdOut
入口点指向x64应用程序(msvsmon.exe)。这可能是从VS运行的问题吗？

最佳答案

这不是一个完美的答案，但是我确实设法获得了一个基于VC++ x86 DLL并在Azure Kubernetes Service上运行的x86 .NET Core Web API。基本上我分为三个阶段:

  • 基于mcr.microsoft.com/windows/servercore:ltsc2019构建自定义镜像，该镜像添加了C++ Redistributable 2015 x86；
  • 基于1.创建的另一个图像，其中添加了.NET Core x86 SDK，以及；
  • 基于2.创建最终图像，其中添加了我的应用程序代码。

    • 下面包括三个Dockerfile。接下来，我将寻求将其整合为单个Dockerfile。

    添加C++ Redist x86:waptx86custom

    请注意，我从自己的Azure帐户中提取了redist exe的副本，但是您也可以将其包含在与Dockerfile相同的文件夹中，然后从那里添加它。
    FROM mcr.microsoft.com/windows/servercore:ltsc2019 AS base

# Installing Microsoft Visual C++ 2015 x86 Redistributable.
ADD https://lqsts.blob.core.windows.net/temp/vc_redist_2015_3.x86.exe C:/vc_redist.x86.exe
RUN C:\vc_redist.x86.exe /install /norestart /quiet /log vc_log.txt

    添加.NET Core SDK x86:waptx86corecustom 
    # escape=`

# Installer image
FROM acswebwapt.azurecr.io/waptx86custom AS installer

# Apply latest patch
RUN curl -fSLo patch.msu http://download.windowsupdate.com/c/msdownload/update/software/updt/2020/01/windows10.0-kb4534119-x64_a2dce2c83c58ea57145e9069f403d4a5d4f98713.msu `
    && mkdir patch `
    && expand patch.msu patch -F:* `
    && del /F /Q patch.msu `
    && DISM /Online /Quiet /Add-Package /PackagePath:C:\patch\windows10.0-kb4534119-x64.cab `
    && rmdir /S /Q patch

ENV COMPLUS_NGenProtectedProcess_FeatureEnabled 0

RUN \Windows\Microsoft.NET\Framework64\v4.0.30319\ngen uninstall "Microsoft.Tpm.Commands, Version=10.0.0.0, Culture=Neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=amd64" `
    && \Windows\Microsoft.NET\Framework64\v4.0.30319\ngen update `
    && \Windows\Microsoft.NET\Framework\v4.0.30319\ngen update

SHELL ["powershell", "-Command", "$ErrorActionPreference = 'Stop'; $ProgressPreference = 'SilentlyContinue'; $verbosePreference='Continue';"]

# Retrieve .NET Core SDK
RUN $dotnet_sdk_version = '3.1.201'; `
    Invoke-WebRequest -OutFile dotnet.zip https://dotnetcli.azureedge.net/dotnet/Sdk/$dotnet_sdk_version/dotnet-sdk-$dotnet_sdk_version-win-x86.zip; `
    $dotnet_sha512 = '48aa1afaf7a52effb367bbb14a66e2c3bf8da468025795daf0fa0d18e3b9650ba3bd23800c9965a4d4ec1d891afecbce51b2487730f1b0d6040ee7cb73a15ec6'; `
    if ((Get-FileHash dotnet.zip -Algorithm sha512).Hash -ne $dotnet_sha512) { `
        Write-Host 'CHECKSUM VERIFICATION FAILED!'; `
        exit 1; `
    }; `
    `
    Expand-Archive dotnet.zip -DestinationPath dotnet; `
    Remove-Item -Force dotnet.zip

# Install PowerShell global tool
RUN $powershell_version = '7.0.0'; `
    Invoke-WebRequest -OutFile PowerShell.Windows.x64.$powershell_version.nupkg https://pwshtool.blob.core.windows.net/tool/$powershell_version/PowerShell.Windows.x64.$powershell_version.nupkg; `
    $powershell_sha512 = '1980da63a4f6017235e7af810bfda66be8fa53d0475d147a8219a36c76a903af99adb6cd5309e3dadc610389ae3525bca1ca2d30e7a991640e924334fd4e4638'; `
    if ((Get-FileHash PowerShell.Windows.x64.$powershell_version.nupkg -Algorithm sha512).Hash -ne $powershell_sha512) { `
        Write-Host 'CHECKSUM VERIFICATION FAILED!'; `
        exit 1; `
    }; `
    `
    \dotnet\dotnet tool install --add-source . --tool-path \powershell --version $powershell_version PowerShell.Windows.x64; `
    \dotnet\dotnet nuget locals all --clear; `
    Remove-Item -Force PowerShell.Windows.x64.$powershell_version.nupkg; `
    Remove-Item -Path \powershell\.store\powershell.windows.x64\$powershell_version\powershell.windows.x64\$powershell_version\powershell.windows.x64.$powershell_version.nupkg -Force


# SDK image
FROM acswebwapt.azurecr.io/waptx86custom

ENV `
    # Enable detection of running in a container
    DOTNET_RUNNING_IN_CONTAINER=true `
    ASPNETCORE_URLS=http://+:443;http://+:80 `
    # Enable correct mode for dotnet watch (only mode supported in a container)
    DOTNET_USE_POLLING_FILE_WATCHER=true `
    # Skip extraction of XML docs - generally not useful within an image/container - helps performance
    NUGET_XMLDOC_MODE=skip `
    # PowerShell telemetry for docker image usage
    POWERSHELL_DISTRIBUTION_CHANNEL=PSDocker-DotnetCoreSDK-NanoServer-1909

# In order to set system PATH, ContainerAdministrator must be used
USER ContainerAdministrator
RUN setx /M PATH "%PATH%;C:\Program Files (x86)\dotnet;C:\Program Files\powershell"
USER ContainerUser

COPY --from=installer ["/dotnet", "/Program Files (x86)/dotnet"]

COPY --from=installer ["/powershell", "/Program Files/powershell"]

# Trigger first run experience by running arbitrary cmd
RUN dotnet help

    添加应用程序
    FROM acswebwapt.azurecr.io/waptx86corecustom AS base

WORKDIR /app
EXPOSE 80
EXPOSE 443

FROM acswebwapt.azurecr.io/waptx86corecustom AS build

WORKDIR /src
COPY ["WAPTCoreWebService/WAPTCoreWebService.csproj", "WAPTCoreWebService/"]
RUN dotnet restore "WAPTCoreWebService/WAPTCoreWebService.csproj"
COPY . .
WORKDIR "/src/WAPTCoreWebService"
RUN dotnet build "WAPTCoreWebService.csproj" -c Release -o /app/build

FROM build AS publish
RUN dotnet publish "WAPTCoreWebService.csproj" -c Release -o /app/publish

FROM base AS final
WORKDIR /app
COPY --from=publish /app/publish .
ENTRYPOINT ["dotnet", "WAPTCoreWebService.dll"]

    关于c# - 如何在Docker中运行.NET Core 3.1.3 x86 App，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/61491430/

    10-16 16:46
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