Docker functionality

Dockerfile

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+# Use Python 3.11 slim image
+FROM python:3.11-slim
+
+# Set environment variables
+ENV PYTHONUNBUFFERED=1
+ENV PYTHONDONTWRITEBYTECODE=1
+ENV FLASK_ENV=production
+ENV FLASK_SECRET=production-secret-change-me
+
+# Install system dependencies
+RUN apt-get update && apt-get install -y \
+    gcc \
+    default-libmysqlclient-dev \
+    pkg-config \
+    curl \
+    && rm -rf /var/lib/apt/lists/*
+
+# Create app directory
+WORKDIR /app
+
+# Copy requirements first for better caching
+COPY requirements.txt .
+
+# Install Python dependencies
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy application code
+COPY . .
+
+# Create necessary directories
+RUN mkdir -p cache logs
+
+# Expose port
+EXPOSE 8000
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=30s --start-period=5s --retries=3 \
+    CMD curl -f http://localhost:8000/ || exit 1
+
+# Copy entrypoint script
+COPY docker-entrypoint.sh /usr/local/bin/
+RUN chmod +x /usr/local/bin/docker-entrypoint.sh
+
+# Set entrypoint
+ENTRYPOINT ["docker-entrypoint.sh"]
+
+# Run gunicorn
+CMD ["gunicorn", "--config", "gunicorn.conf.py", "web.app:app"]