Docker unable to resolve .net standard class libraries, on deploying .net core app to Docker

问题

I am deploying .net core app to Docker.

My docker file is as follows, which is added in my .net core application:

FROM microsoft/dotnet:1.1-sdk-projectjson

COPY . /app
WORKDIR /app

RUN ["dotnet", "restore"]
RUN ["dotnet", "build"]

EXPOSE 5000/tcp
ENV ASPNETCORE_URLS http://*:5000

ENTRYPOINT ["dotnet", "run"]

Its not able to resolve .net standard class libraries, which are added to my .net core application.

My project structure is as follows:

Core folder

   -Logging.Interfaces .net std project

   -Logging.Entities .net std project

Infrastructure folder

   -Infrastructure.Logging .net std project

Services folder

   -Services .net std project

Web folder

   -Web .net core application

Dependencies section of project.json of Web application is as follows:

{
  "dependencies": {
    "Microsoft.NETCore.App": {
      "version": "1.0.0",
      "type": "platform"
    },
    "Microsoft.ApplicationInsights.AspNetCore": "1.0.0",
    "Microsoft.AspNetCore.Mvc": "1.0.1",
    "Microsoft.AspNetCore.Routing": "1.0.1",
    "Microsoft.AspNetCore.Server.IISIntegration": "1.0.0",
    "Microsoft.AspNetCore.Server.Kestrel": "1.0.1",
    "Microsoft.Extensions.Configuration.EnvironmentVariables": "1.0.0",
    "Microsoft.Extensions.Configuration.FileExtensions": "1.0.0",
    "Microsoft.Extensions.Configuration.Json": "1.0.0",
    "Microsoft.Extensions.Logging": "1.0.0",
    "Microsoft.Extensions.Logging.Console": "1.0.0",
    "Microsoft.Extensions.Logging.Debug": "1.0.0",
    "Microsoft.Extensions.Options.ConfigurationExtensions": "1.0.0",
    "Services": "1.0.0-*",
    "DomainInterfaces": "1.0.0-*",
    "Core.Logging.Interfaces": "1.0.0-*",
    "Core.Logging.Entities": "1.0.0-*",
    "Infrastructure.Logging": "1.0.0-*"
  },

When I run following command, for creating image, it gives me error:

user@machine_name MINGW64 path to solution
$  docker build -t helloWorld:core .

Unable to resolve 'Core.Logging.Interfaces (>= 1.0.0)' for '.NETCoreApp,Version=v1.1'.
    Unable to resolve 'Core.Logging.Entities (>= 1.0.0)' for '.NETCoreApp,Version=v1.1'.
    Unable to resolve 'Services (>= 1.0.0)' for '.NETCoreApp,Version=v1.1'.
    Unable to resolve 'Infrastructure.Logging (>= 1.0.0)' for '.NETCoreApp,Version=v1.1'.
    Unable to resolve 'DomainInterfaces (>= 1.0.0)' for '.NETCoreApp,Version=v1.1'.

Can someone please guide, what is going wrong over here, as I am completely new to Docker.

回答1:

I think you should be tried to create a Dockerfile on solution level as following structure:

/YourProject

• src
  • Core
  • Infrastructure
  • Services
  • WebApp
• Dockerfile

And changes content of Dockerfile to:

FROM microsoft/dotnet:1.1-sdk-projectjson

COPY . /app
WORKDIR /app/src/WebApp

RUN ["dotnet", "restore"]
RUN ["dotnet", "build"]

EXPOSE 5000/tcp
ENV ASPNETCORE_URLS http://*:5000

ENTRYPOINT ["dotnet", "run"]

Hope this help!

回答2:

My dot net core application does not have a project.json file either. I fixed my problem with the follow: FROM microsoft/dotnet:1.1-sdk instead of FROM microsoft/dotnet:1.1-sdk-projectjson

来源：https://stackoverflow.com/questions/42198968/docker-unable-to-resolve-net-standard-class-libraries-on-deploying-net-core-a