[c#] Where is NuGet.Config file located in Visual Studio project?

I have created an answer for this post that might help: https://stackoverflow.com/a/63816822/2399164

Summary:

I am a little late to the game but I believe I found a simple solution to this problem...

1. Create a "NuGet.Config" file in the same directory as your .sln

<?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="{{CUSTOM NAME}}" value="{{CUSTOM SOURCE}}" />
  </packageSources>
  <packageRestore>
    <add key="enabled" value="True" />
    <add key="automatic" value="True" />
  </packageRestore>
  <bindingRedirects>
    <add key="skip" value="False" />
  </bindingRedirects>
  <packageManagement>
    <add key="format" value="0" />
    <add key="disabled" value="False" />
  </packageManagement>
</configuration>

2. That is it! Create your "Dockerfile" here as well

3. Run docker build with your Dockerfile and all will get resolved