Remove macOS and Apple container references

- Remove Containerfile and .containerignore (Apple container specific)
- Update package.json to remove Apple container scripts
- Replace macOS-specific build scripts with Docker-focused versions
- Update README to prioritize Docker over Apple container
- Update DEVELOPMENT.md to remove macOS-first approach
- Update demo script to remove Apple container references
- Update workflow to remove Containerfile path triggers
- Simplify project to be Docker-first for cross-platform compatibility

scripts/dev.sh

@@ -1,21 +1,13 @@
 #!/bin/bash
 
 # JMESPath Testing Tool - Development Script
-# Optimized for macOS development environment
 
 set -e
 
-echo "🍎 JMESPath Testing Tool - macOS Development"
-echo "==========================================="
+echo "🚀 JMESPath Testing Tool - Development"
+echo "====================================="
 echo ""
 
-# Check environment
-if [[ "$OSTYPE" == "darwin"* ]]; then
-    echo "✅ Running on macOS"
-else
-    echo "⚠️  This script is optimized for macOS but will attempt to run anyway."
-fi
-
 # Check Node.js
 if command -v node &> /dev/null; then
     echo "✅ Node.js version: $(node --version)"