Add local tool installation and dnx execution documentation

[Copilot]

Documentation only covered global tool installation. Added local tool installation via manifest and all execution methods including dnx variants.

Changes

• Local tool installation: Documented manifest-based workflow with dotnet new tool-manifest and dotnet tool install GitVersion.Tool
• Execution methods: Added all four invocation patterns with correct syntax:
  • dotnet gitversion - standard (uses command name)
  • dotnet tool exec GitVersion.Tool - explicit (uses package name)
  • dotnet dnx GitVersion.Tool - shorthand alias
  • dnx GitVersion.Tool - shortest form
• Package name casing: Use GitVersion.Tool (proper casing matching NuGet)
• Version examples: Updated from 5.* to 6.*

Key distinction: direct invocation uses command name gitversion, while tool exec/dnx variants require package name GitVersion.Tool.

# Install as local tool
dotnet tool install GitVersion.Tool --version 6.*

# Standard invocation
dotnet gitversion

# Explicit manifest execution
dnx GitVersion.Tool

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Update docs to include dnx usage</issue_title>
<issue_description></issue_description>

<agent_instructions>Please update the docs to include the option of installing the dotnet global tool GitVersion.Tool using dnx in the docs/</agent_instructions>

Comments on the Issue (you are @copilot in this section)

• Fixes Update docs to include dnx usage #4823

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[Copilot]

Pull request overview

This pull request aims to document local tool installation for GitVersion and alternative execution methods. However, it introduces critical errors by documenting invalid dnx commands that are not part of the modern .NET CLI. The PR correctly documents local tool installation via manifest and updates version examples from 5.* to 6.*, but the execution method documentation contains significant inaccuracies.

Changes:

• Added .NET Local Tool section documenting manifest-based installation workflow
• Updated version examples from 5.* to 6.*
• Documented dotnet tool exec execution method (correct)
• Incorrectly documented dnx and dotnet dnx commands as valid execution methods (critical error)
• Added reference links for local tool documentation

[mergify]

Thank you @Copilot for your contribution!

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

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