Azure Devops pipeline - Getting dotnet tools (customer command) to run

Often have problem when there is more than a feed config in your nuget.config. For example, having your private feed, dotnet custom tool like "dotnet tool install' just won't work.

To resolve this you specify a --configfile and provide a single config file entry called dotnettool.config which has the content below :-

  - task: DotNetCoreCLI@2

    displayName: Install ReportGenerator tool

    inputs:

      command: custom

      custom: tool

      arguments: install --tool-path . dotnet-reportgenerator-globaltool 

--configfile dotnettool.config

      feedsToUse: 'select'

dotnettool.config content

xml version="1.0" encoding="utf-8"?>

<configuration>

  <packageSources>

    <clear/>

    <add key="nuget.org" value="https://api.nuget.org/v3/index.json" />

  </packageSources>

</configuration>