Initial commit: JMESPath Testing Tool

- React-based web application for testing JMESPath expressions
- macOS-first containerization with Apple container command
- Bootstrap UI with real-time evaluation
- GitHub Actions CI/CD pipeline
- Docker fallback support
- Comprehensive documentation and development scripts

Dockerfile.dev

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+# Development Dockerfile
+FROM node:24-alpine
+
+# Set working directory
+WORKDIR /app
+
+# Copy package files
+COPY package*.json ./
+
+# Install all dependencies (including dev dependencies)
+RUN npm install
+
+# Copy application source
+COPY . .
+
+# Expose port 3000
+EXPOSE 3000
+
+# Start the development server
+CMD ["npm", "start"]