在Docker中运行应用程序时出错，http错误

Question

我在Startup.ConfigureServices（）中有此代码，当在本地运行Windows服务时，该代码运行良好。但是当我对应用程序进行dockerize时，出现以下错误：

  

无法解析以下类型的“ System.Net.Http.HttpClient”服务   类型为“配置”的参数“ httpClient”   ‘MyProject.WindowsService.Startup

try
{       
    services.AddSingleton(new HttpClient(new HttpClientHandler { })
    {
        DefaultRequestHeaders ={
                    Authorization =
                    new AuthenticationHeaderValue("Bearer",this.JSONWebToken.Value)
                    }
    });
}
catch(Exception ex)
{
    Console.WriteLine($"Error in Startup.ConfigureServices() {ex.Message}");
}

这是我的docker文件

FROM microsoft/aspnet:4.7.2-windowsservercore-ltsc2016
EXPOSE 32700
WORKDIR /WinService
COPY dotnet-sdk-2.2.104-win-x64.exe ./
RUN Start-Process 'dotnet-sdk-2.2.104-win-x64.exe' '/quiet' -PassThru | Wait-Process; 
COPY WindowsService/bin/Release/* ./
COPY WindowsService/launcher.bat .
ENTRYPOINT ["MyProject.WindowsService.exe", "--consolemode=true"]