Add dev container configuration with GNU-based development tooling

[Copilot]

Standardizes development environment with containerized Azure tooling and GNU utilities for streamlined workflows.

Dev Container Configuration

• Base image: mcr.microsoft.com/devcontainers/typescript-node:1-20-bullseye
• Pre-installed: Azure CLI, PowerShell, GitHub CLI, GNU core utilities
• Auto-install dependencies on container creation
• Cross-platform compatible (removed default mount for HOME variable portability)

Development Helper Script

.devcontainer/dev.sh provides common workflows:

• check - Validates environment (Azure CLI, PowerShell versions)
• dev - Build + test pipeline
• setup - Full install + build
• validate - Azure credential verification

Uses standard GNU utilities (bash, grep, sed) with color-coded output for rapid iteration.

Documentation

• Main README: Development section with quick start
• .devcontainer/README.md: Setup instructions for VS Code/Codespaces
• .devcontainer/EXAMPLES.md: CI workflow examples

Usage

# In VS Code with Dev Containers extension
# Click "Reopen in Container"

# Or via GitHub Codespaces
# Code → Codespaces → Create codespace

# Quick dev workflow
.devcontainer/dev.sh dev

Eliminates manual tool installation; ensures version consistency across contributors.

Original prompt

connect and stream line log in process withe azure dev containers and gnu

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