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+# SuperKart Sales Forecasting API - Docker Configuration
+# =====================================================
+
+# Use Python 3.9 slim image for optimal size and compatibility
+FROM python:3.9-slim
+
+# Set environment variables
+ENV PYTHONDONTWRITEBYTECODE=1
+ENV PYTHONUNBUFFERED=1
+ENV FLASK_APP=app.py
+ENV FLASK_ENV=production
+
+# Set working directory
+WORKDIR /app
+
+# Install system dependencies
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends \
+        gcc \
+        g++ \
+        curl \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy requirements first for better Docker layer caching
+COPY requirements.txt .
+
+# Install Python dependencies
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy application files
+COPY . .
+
+# Create non-root user for security
+RUN adduser --disabled-password --gecos '' appuser && chown -R appuser:appuser /app
+USER appuser
+
+# Expose port
+EXPOSE 8080
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=30s --start-period=5s --retries=3 \
+    CMD curl -f http://localhost:8080/health || exit 1
+
+# Production command using Gunicorn
+CMD ["gunicorn", "--bind", "0.0.0.0:8080", "--workers", "2", "--timeout", "120", "--keep-alive", "2", "--max-requests", "1000", "--max-requests-jitter", "100", "app:app"]
+
+# Development command (commented out)
+# CMD ["python", "app.py"]
+
+# Container metadata
+LABEL maintainer="SuperKart ML Team"
+LABEL version="1.0"
+LABEL description="SuperKart Sales Forecasting API"