How do I register a new NuGet package source with dotnet CLI on Ubuntu 14.04?

Question

I am running .NET Core 1.1.0 on Ubuntu 14.04, with the goal of hosting my Web APIs in Docker on Ubuntu. I want to build my packages on Ubuntu, but some of the NuGet references are hosted on an internal NuGet repository (Artifactory). This works fine in VS2015 on Windows after I add the package source, but when I run:

dotnet restore

on Ubuntu, the packages hosted on the public NuGet repo download fine, but those on Artifactory fail:

error: Unable to resolve 'Mercury.BaseModel (>= 1.1.0)' for '.NETCoreApp,Version=v1.1'.

I found a NuGet config file at \home\<user>\.nuget\NuGet\NuGet.Config and added the Artifactory repository as follows:

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <packageSources>
    <add key="nuget.org" value="https://api.nuget.org/v3/index.json" protocolVersion="3" />
    <add key="Artifactory-DEV" value="https://theluggage-agct.gray.net/artifactory/api/nuget/nuget-institutional-development-local" protocolVersion="3"/>
  </packageSources>
</configuration>

but I am still getting the same error.

NuGet itself does not work after installing the .NET Core SDK, I am using dotnet restore as mentioned - is there similar config I must edit for the dotnet CLI (which must be using NuGet?) or is there something else I need to do?

Thanks!

Answer 1

After all that I quickly identified 2 problems I had missed:

1. I had used sudo -i to run as root attempting to resolve the problem, as as a result the NuGet config I setup in my \home folder was not being picked up.

2. Moving back to my own logon, I then got an error:

   error: Unable to load the service index for source https://theluggage-agct.gray.net/artifactory/api/nuget/nuget-institutional-development-local.
   error:   The content at 'https://theluggage-agct.gray.net/artifactory/api/nuget/nuget-institutional-development-local' is not a valid JSON object.
   error:   Unexpected character encountered while parsing value: <. Path '', line 0, position 0.
   

Turns out that our Artifactory NuGet repo returns XML which is NuGet v2 compliant. I changed the config file to set the repo as v2 and it is now working. So, from above, edit the file at

\home\<user>\.nuget\NuGet\NuGet.Config

adding your new repo URL, and get the version setting right:

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <packageSources>
    <add key="nuget.org" value="https://api.nuget.org/v3/index.json" protocolVersion="3" />
    <add key="Artifactory-DEV" value="https://theluggage-agct.gray.net/artifactory/api/nuget/nuget-institutional-development-local" protocolVersion="2"/>
  </packageSources>
</configuration>

Answer 2

Dotnet CLI restore can take -s as source feed url, so if you have Artifactory with Remote repository to nuget.org.

dotnet restore -s https://artifactory.example.com/api/nuget/nuget.org

Reference :

• https://docs.microsoft.com/en-us/dotnet/core/tools/dotnet-restore?tabs=netcore2x

• https://www.jfrog.com/confluence/display/RTF/NuGet+Repositories