Updated stuff

Dockerfile

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+# Use a slim Python image
+FROM python:3.11-slim
+
+# Environment: no .pyc files, real-time logs
+ENV PYTHONDONTWRITEBYTECODE=1
+ENV PYTHONUNBUFFERED=1
+
+# Create working directory
+WORKDIR /app
+
+# Install system dependencies
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    build-essential \
+ && rm -rf /var/lib/apt/lists/*
+
+# Install Python dependencies
+COPY requirements.txt .
+RUN pip install --upgrade pip && pip install -r requirements.txt
+
+# Copy app code
+COPY . .
+
+# Expose Flask port
+EXPOSE 5000
+
+# Launch Gunicorn with 4 workers (adjust for your CPU cores)
+CMD ["gunicorn", "--bind", "0.0.0.0:5000", "app:app", "--workers", "4"]