Add comprehensive Terraform infrastructure with Firebase automation

- Create Firebase project, web app, and Firestore database
- Automate Firebase Authentication with email templates
- Configure security rules for user data isolation
- Support Cloud Run and App Engine hosting options
- Add professional email templates for password reset and verification
- Include deployment scripts and comprehensive documentation
- Implement service accounts with minimal required permissions
- Add Docker configuration for containerized deployment

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

terraform/Dockerfile

@@ -0,0 +1,28 @@
+# Use Python 3.11 slim image
+FROM python:3.11-slim
+
+# Set working directory
+WORKDIR /app
+
+# Copy requirements first for better layer caching
+COPY requirements.txt .
+
+# Install dependencies
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy application code
+COPY . .
+
+# Create non-root user (security best practice)
+RUN useradd -m -u 1000 appuser && chown -R appuser:appuser /app
+USER appuser
+
+# Expose port
+EXPOSE 5000
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
+  CMD curl -f http://localhost:5000/ || exit 1
+
+# Run the application
+CMD ["gunicorn", "--bind", "0.0.0.0:5000", "--workers", "2", "--timeout", "120", "app:app"]