Resilv/devcontainer

[RenSilvaAU]

Overview

Adds a complete Dev Container configuration to streamline development setup and ensure consistent tooling across all contributors.

Changes

Dev Container Configuration

• .devcontainer/Dockerfile: Custom image based on mcr.microsoft.com/devcontainers/base:bullseye with .NET SDK 2.1 pre-installed
• .devcontainer/devcontainer.json: Configures PowerShell feature, VS Code extensions (PowerShell, ESLint), and post-create automation
• .devcontainer/postcreate.sh: Automated setup script that:
  • Installs nvs (Node Version Switcher) and Node.js 20.19.0
  • Installs Rush 5.112.2 globally
  • Configures shell profiles for persistent tool availability
  • Verifies all tool installations

Documentation Updates

• docs/development.md: Complete rewrite to:
  • Add "Getting Started with Dev Containers" section as the recommended approach
  • Update tool versions to match actual requirements (Node.js 20.19.0, Rush 5.112.2, PowerShell 7.5+, .NET SDK 2.1)
  • Convert all examples from Windows-specific PowerShell to cross-platform PowerShell
  • Improve clarity and organization of setup instructions

Version Specifications

• rush.json: Locked to Rush 5.112.2 (stable version for this repository)

Benefits

• Zero-setup development: Contributors can start coding immediately after opening in VS Code
• Consistent environment: All developers use identical tool versions
• Cross-platform: Works on Windows, macOS, and Linux
• No local installation pollution: All tools contained within the container

Testing

Verified all tools are correctly installed and available:

• ✅ Node.js 20.19.0
• ✅ npm 10.7.0
• ✅ Rush 5.112.2
• ✅ PowerShell 7.5.4
• ✅ .NET SDK 2.1.818

Successfully ran rush update and rush rebuild in the dev container.

[RenSilvaAU]

@dolauli - I believe I have addressed all the comments, may I have your review?