dotnet publish command fails on container builder for react-redux spa template #433

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fergalmoran · 2025-08-09T17:16:16Z

fergalmoran commented

2025-08-09 17:16:16 +00:00

Originally created by @mattwaggs on 9/11/2017

I created a new project with dotnet new reactredux. I then added a Dockerfile that that runs the dotnet publish command. I can build and run the docker image locally on my windows machine with no problem but when I push to container builder I get this error:

/usr/share/dotnet/sdk/2.0.0/Sdks/Microsoft.NET.Sdk/build/Microsoft.NET.Sdk.DefaultItems.targets(286,5): error : Duplicate 'Content' items were included. The .NET SDK includes 'Content' items from your project directory by default. You can either remove these items from your project file, or set the 'EnableDefaultContentItems' property to 'false' if you want to explicitly include them in your project file. For more information, see https://aka.ms/sdkimplicititems. The duplicate items were: 'Views/Home/Index.cshtml'; 'Views/Shared/Error.cshtml'; 'Views/Shared/_Layout.cshtml' [/source/webapp.csproj]
The command '/bin/sh -c dotnet publish --output /app/ --configuration Release' returned a non-zero code: 1

My googling suggests the issue is with the .csproj file and that the latest sdk includes everything in the project directory by default, but I can't pinpoint what exactly is causing the issue.

My .csproj file looks like this:

<Project Sdk="Microsoft.NET.Sdk.Web">

  <PropertyGroup>
    <TargetFramework>netcoreapp2.0</TargetFramework>
    <TypeScriptCompileBlocked>true</TypeScriptCompileBlocked>
    <TypeScriptToolsVersion>Latest</TypeScriptToolsVersion>
    <IsPackable>false</IsPackable>
    <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
  </PropertyGroup>

  <ItemGroup>
    <None Include="app.yaml" CopyToOutputDirectory="Always" />
    <None Include="Dockerfile" CopyToOutputDirectory="Always" />
  </ItemGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.AspNetCore.All" Version="2.0.0" />
  </ItemGroup>

  <ItemGroup>
    <DotNetCliToolReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Tools" Version="2.0.0" />
  </ItemGroup>

  <ItemGroup>
    <!-- Files not to publish (note that the 'dist' subfolders are re-added below) -->
    <Content Remove="ClientApp\**" />
  </ItemGroup>

  <Target Name="DebugRunWebpack" BeforeTargets="Build" Condition=" '$(Configuration)' == 'Debug' And !Exists('wwwroot\dist') ">
    <!-- Ensure Node.js is installed -->
    <Exec Command="node --version" ContinueOnError="true">
      <Output TaskParameter="ExitCode" PropertyName="ErrorCode" />
    </Exec>
    <Error Condition="'$(ErrorCode)' != '0'" Text="Node.js is required to build and run this project. To continue, please install Node.js from https://nodejs.org/, and then restart your command prompt or IDE." />

    <!-- In development, the dist files won't exist on the first run or when cloning to
         a different machine, so rebuild them if not already present. -->
    <Message Importance="high" Text="Performing first-run Webpack build..." />
    <Exec Command="node node_modules/webpack/bin/webpack.js --config webpack.config.vendor.js" />
    <Exec Command="node node_modules/webpack/bin/webpack.js" />
  </Target>

  <Target Name="PublishRunWebpack" AfterTargets="ComputeFilesToPublish">
    <!-- As part of publishing, ensure the JS resources are freshly built in production mode -->
    <Exec Command="npm install" />
    <Exec Command="node node_modules/webpack/bin/webpack.js --config webpack.config.vendor.js --env.prod" />
    <Exec Command="node node_modules/webpack/bin/webpack.js --env.prod" />

    <!-- Include the newly-built files in the publish output -->
    <ItemGroup>
      <DistFiles Include="wwwroot\dist\**; ClientApp\dist\**" />
      <ResolvedFileToPublish Include="@(DistFiles->'%(FullPath)')" Exclude="@(ResolvedFileToPublish)">
        <RelativePath>%(DistFiles.Identity)</RelativePath>
        <CopyToPublishDirectory>PreserveNewest</CopyToPublishDirectory>
      </ResolvedFileToPublish>
    </ItemGroup>
  </Target>

</Project>

I'm not entirely sure if this is a problem with the react-redux spa template or with Google's container builder. I don't have the same issue using the empty web template from dotnet new web.

*Originally created by @mattwaggs on 9/11/2017* I created a new project with `dotnet new reactredux`. I then added a Dockerfile that that runs the `dotnet publish` command. I can build and run the docker image locally on my windows machine with no problem but when I push to container builder I get this error: ``` /usr/share/dotnet/sdk/2.0.0/Sdks/Microsoft.NET.Sdk/build/Microsoft.NET.Sdk.DefaultItems.targets(286,5): error : Duplicate 'Content' items were included. The .NET SDK includes 'Content' items from your project directory by default. You can either remove these items from your project file, or set the 'EnableDefaultContentItems' property to 'false' if you want to explicitly include them in your project file. For more information, see https://aka.ms/sdkimplicititems. The duplicate items were: 'Views/Home/Index.cshtml'; 'Views/Shared/Error.cshtml'; 'Views/Shared/_Layout.cshtml' [/source/webapp.csproj] The command '/bin/sh -c dotnet publish --output /app/ --configuration Release' returned a non-zero code: 1 ``` My googling suggests the issue is with the .csproj file and that the latest sdk includes everything in the project directory by default, but I can't pinpoint what exactly is causing the issue. My .csproj file looks like this: ``` <Project Sdk="Microsoft.NET.Sdk.Web"> <PropertyGroup> <TargetFramework>netcoreapp2.0</TargetFramework> <TypeScriptCompileBlocked>true</TypeScriptCompileBlocked> <TypeScriptToolsVersion>Latest</TypeScriptToolsVersion> <IsPackable>false</IsPackable> <GenerateAssemblyInfo>false</GenerateAssemblyInfo> </PropertyGroup> <ItemGroup> <None Include="app.yaml" CopyToOutputDirectory="Always" /> <None Include="Dockerfile" CopyToOutputDirectory="Always" /> </ItemGroup> <ItemGroup> <PackageReference Include="Microsoft.AspNetCore.All" Version="2.0.0" /> </ItemGroup> <ItemGroup> <DotNetCliToolReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Tools" Version="2.0.0" /> </ItemGroup> <ItemGroup>  <Content Remove="ClientApp\**" /> </ItemGroup> <Target Name="DebugRunWebpack" BeforeTargets="Build" Condition=" '$(Configuration)' == 'Debug' And !Exists('wwwroot\dist') ">  <Exec Command="node --version" ContinueOnError="true"> <Output TaskParameter="ExitCode" PropertyName="ErrorCode" /> </Exec> <Error Condition="'$(ErrorCode)' != '0'" Text="Node.js is required to build and run this project. To continue, please install Node.js from https://nodejs.org/, and then restart your command prompt or IDE." />  <Message Importance="high" Text="Performing first-run Webpack build..." /> <Exec Command="node node_modules/webpack/bin/webpack.js --config webpack.config.vendor.js" /> <Exec Command="node node_modules/webpack/bin/webpack.js" /> </Target> <Target Name="PublishRunWebpack" AfterTargets="ComputeFilesToPublish">  <Exec Command="npm install" /> <Exec Command="node node_modules/webpack/bin/webpack.js --config webpack.config.vendor.js --env.prod" /> <Exec Command="node node_modules/webpack/bin/webpack.js --env.prod" />  <ItemGroup> <DistFiles Include="wwwroot\dist\**; ClientApp\dist\**" /> <ResolvedFileToPublish Include="@(DistFiles->'%(FullPath)')" Exclude="@(ResolvedFileToPublish)"> <RelativePath>%(DistFiles.Identity)</RelativePath> <CopyToPublishDirectory>PreserveNewest</CopyToPublishDirectory> </ResolvedFileToPublish> </ItemGroup> </Target> </Project> ``` I'm not entirely sure if this is a problem with the react-redux spa template or with Google's container builder. I don't have the same issue using the empty web template from `dotnet new web`.

fergalmoran closed this issue

2025-08-09 17:16:16 +00:00

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Reference: github/JavaScriptServices#433