在涉及目标“DockerBuildServiceReferences"的目标依赖图中存在循环依赖. [英] There is a circular dependency in the target dependency graph involving target "DockerBuildServiceReferences"

问题描述

我正在尝试向现有的 ASP.Net(核心)Web 应用程序添加 docker 支持.

I'm trying to add docker support to an existing ASP.Net (Core) web application.

到目前为止，我所做的只是右键单击我的解决方案，然后单击 Add >Docker 支持.当我尝试使用 docker 开始调试时，我收到以下错误:

Up to this point, all I've done is right click my solution and then clicked on Add > Docker Support. When I then try to start debugging using docker I get the following error:

C:Program Files (x86)Microsoft Visual Studio2017CommunityMSBuildMicrosoftVisualStudiov15.0DockerMicrosoft.VisualStudio.Docker.Compose.targets(170,5): error MSB4006: There is a circular dependency in the target dependency graph involving target "DockerBuildServiceReferences".

我已经检查了 Microsoft.VisualStudio.Docker.Compose.targets 文件，但我看不到任何涉及 DockerBuildServiceReferences 的循环依赖，实际上是搜索整个文件只在两个地方提到:

I've checked the Microsoft.VisualStudio.Docker.Compose.targets file and I can't see any circular dependency involving DockerBuildServiceReferences, in fact searching through the entire file it's only mentioned in two places:

  <!--
  ***********************************************************************************************

  Docker Compose Project Targets

  ***********************************************************************************************
  -->

  <UsingTask TaskName="CleanWorkspace" AssemblyFile="$(DockerBuildTasksAssembly)" />
  <UsingTask TaskName="EnsureMsVsMonExists" AssemblyFile="$(DockerBuildTasksAssembly)" />
  <UsingTask TaskName="EnsureVsDbgExists" AssemblyFile="$(DockerBuildTasksAssembly)" />
  <UsingTask TaskName="GetServiceReferences" AssemblyFile="$(DockerBuildTasksAssembly)" />
  <UsingTask TaskName="PrepareForBuild" AssemblyFile="$(DockerBuildTasksAssembly)" />
  <UsingTask TaskName="PrepareForLaunch" AssemblyFile="$(DockerBuildTasksAssembly)" />

  <PropertyGroup>
    <BuildDependsOn>
      DockerSetDevelopmentMode;
      DockerPrepareForBuild;
      DockerGetServiceReferences;
      DockerBuildServiceReferences;
      $(BuildDependsOn);
      DockerComposeBuild;
      DockerPrepareForLaunch;
    </BuildDependsOn>
    <CleanDependsOn>
      DockerSetDevelopmentMode;
      DockerCleanWorkspace;
      $(CleanDependsOn);
      DockerGetServiceReferences;
      DockerCleanServiceReferences;
    </CleanDependsOn>
  </PropertyGroup>

  <PropertyGroup>
    <DockerComposeProjectPath>$(MSBuildProjectFullPath)</DockerComposeProjectPath>
  </PropertyGroup>

还有:

  <!--
  ***********************************************************************************************

  TARGET : DockerBuildServiceReferences

  ***********************************************************************************************
  -->

  <Target Name="DockerBuildServiceReferences">
    <PropertyGroup>
      <DockerServiceReferenceTarget Condition=" '$(DockerDevelopmentMode)' == 'Regular' ">DockerPackageService</DockerServiceReferenceTarget>
      <DockerServiceReferenceTarget Condition=" '$(DockerServiceReferenceTarget)' == '' ">Build</DockerServiceReferenceTarget>
    </PropertyGroup>
    <MSBuild Projects="@(DockerServiceReference)"
             Targets="$(DockerServiceReferenceTarget)"
             Properties="Configuration=$(Configuration);Platform=$(Platform);BuildingInsideVisualStudio=false"
             Condition=" '@(DockerServiceReference)' != '' " />
  </Target>

我还尝试从头开始创建一个新的 ASP.NET Core 应用程序，并为此添加了 docker 支持，它运行良好.这让我相信这个错误掩盖了其他东西.

I've also tried creating a new ASP.NET Core app from scratch and added docker support to that, it works perfectly. Which leads me to believe this error is covering for something else.

我使用的是 Visual Studio 2017，docker version 的输出如下(如果有帮助的话):

I'm using Visual Studio 2017 and the output of docker version is as follows (if that helps at all):

Client:
 Version:      17.05.0-ce-rc1
 API version:  1.27 (downgraded from 1.29)
 Go version:   go1.7.5
 Git commit:   2878a85
 Built:        Wed Apr 12 19:43:25 2017
 OS/Arch:      windows/amd64

Server:
 Version:      17.03.1-ce
 API version:  1.27 (minimum version 1.12)
 Go version:   go1.7.5
 Git commit:   c6d412e
 Built:        Fri Mar 24 00:00:50 2017
 OS/Arch:      linux/amd64
 Experimental: true

任何想法将不胜感激！

推荐答案

根据 this thread 和this answer，可能会出现这种情况如果 Dockerfile 和项目文件 (.csproj) 不在同一文件夹中，或者您有解决方案文件 (.sln) 和 项目文件 (.csproj) 位于同一文件夹中.

According this thread and this answer, such situation may occur if you have Dockerfile and the project file (.csproj) not in the same folder, or you have a solution file (.sln) and project file (.csproj) in the same folder.

你可能已经在同一个目录下为它创建了一个解决方案和启动项目，这会导致docker循环引用.尝试使用单独的文件夹重新创建您的项目并重做所有步骤.

You've probably created a solution and startup project for it in the same directory, which will lead to docker circular reference. Try to re-create your project with separate folder and redo all the steps.

这篇关于在涉及目标“DockerBuildServiceReferences"的目标依赖图中存在循环依赖.的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！