ASP.net core API 2.1 app | Dotnet restore failing in Dockerfile while building docker images | Windows Container | Windows 10 Enterprise OS version 1809 RRS feed

  • Question

  • Please help me in resolving this issue, it has become a major blocker for me.


    1.Microsoft Visual Studio Enterprise 2019
       Version 16.7.1

    2. Docker Desktop( Docker version 19.03.12, build 48a66213fe)


    While building images through Dockerfile, it is getting failed while running "dotnet restore command"

    If I run the same "dotnet restore command" in command prompt , it is executing successfully.

    What I have done till now: 

    1. I re-installed both VS 2019 and docker desktop, didn't help.
    2. I tried to get answers from other forum, didn't help.


    FROM mcr.microsoft.com/dotnet/core/aspnet:2.1 AS base
    EXPOSE 80

    FROM mcr.microsoft.com/dotnet/core/sdk:2.1 AS build
    WORKDIR /src
    COPY ["PatientService/PatientService.csproj", "PatientService/"]
    RUN dotnet restore "PatientService/PatientService.csproj"
    COPY . .
    WORKDIR "/src/PatientService"
    RUN dotnet build "PatientService.csproj" -c Release -o /app/build

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

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


    1>------ Rebuild All started: Project: PatientService, Configuration: Debug Any CPU ------
    1>PatientService -> D:\Projects_Exercise\PatientService\PatientService\bin\Debug\netcoreapp2.1\PatientService.dll
    1>Docker version 19.03.12, build 48a66213fe
    1>docker build -f "d:\projects_exercise\patientservice\patientservice\dockerfile" --force-rm -t patientservice  --label "com.microsoft.created-by=visual-studio" --label "com.microsoft.visual-studio.project-name=PatientService" "d:\projects_exercise\patientservice"
    1>Sending build context to Docker daemon  70.66kB
    1>Step 1/17 : FROM mcr.microsoft.com/dotnet/core/aspnet:2.1 AS base
    1> ---> cd464c4949df
    1>Step 2/17 : EXPOSE 80
    1> ---> Using cache
    1> ---> 113b7b4da631
    1>Step 3/17 : FROM mcr.microsoft.com/dotnet/core/sdk:2.1 AS build
    1> ---> 58b9fa67619f
    1>Step 4/17 : WORKDIR /src
    1> ---> Using cache
    1> ---> 63c1068fe906
    1>Step 5/17 : COPY ["PatientService/PatientService.csproj", "PatientService/"]
    1> ---> Using cache
    1> ---> e9dd2773b565
    1>Step 6/17 : RUN dotnet restore "PatientService/PatientService.csproj"
    1> ---> Running in 64786399b7ae
    1>C:\Program Files\dotnet\sdk\2.1.809\NuGet.targets(123,5): error : Unable to load the service index for source https://api.nuget.org/v3/index.json. [C:\src\PatientService\PatientService.csproj]
    1>C:\Program Files\dotnet\sdk\2.1.809\NuGet.targets(123,5): error :   No such host is known [C:\src\PatientService\PatientService.csproj]
    1>Removing intermediate container 64786399b7ae
    1>The command 'cmd /S /C dotnet restore "PatientService/PatientService.csproj"' returned a non-zero code: 1
    1>d:\projects_exercise\patientservice\patientservice\dockerfile : error CTC1014: Docker command failed with exit code 1.
    1>d:\projects_exercise\patientservice\patientservice\dockerfile : error CTC1014: The command 'cmd /S /C dotnet restore "PatientService/PatientService.csproj"' returned a non-zero code: 1
    1>Done building project "PatientService.csproj" -- FAILED.
    ========== Rebuild All: 0 succeeded, 1 failed, 0 skipped ==========
    • Edited by vranjan34 Saturday, August 15, 2020 12:27 PM udpated
    • Moved by CoolDadTx Saturday, August 15, 2020 3:39 PM ASP.NET related
    Saturday, August 15, 2020 11:33 AM

All replies

  • Hello,

    For ASP.NET questions use this forum 


    Please remember to mark the replies as answers if they help and unmarked them if they provide no help, this will help others who are looking for solutions to the same or similar problem. Contact via my Twitter (Karen Payne) or Facebook (Karen Payne) via my MSDN profile but will not answer coding question on either.

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    Saturday, August 15, 2020 12:39 PM