Create Dockerfile

Dockerfile

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+# Use Python 3.11 base image
+FROM python:3.11-slim
+
+# Create user for security (required by HF Spaces)
+RUN useradd -m -u 1000 user
+
+# Set working directory
+WORKDIR /app
+
+# Copy requirements first (better caching)
+COPY --chown=user requirements.txt .
+
+# Install dependencies
+RUN pip install --no-cache-dir --upgrade pip && \
+    pip install --no-cache-dir -r requirements.txt
+
+# Copy application code
+COPY --chown=user . .
+
+# Switch to non-root user (HF Spaces requirement)
+USER user
+
+# Set environment variables
+ENV HOME=/home/user \
+    PATH=/home/user/.local/bin:$PATH \
+    PYTHONUNBUFFERED=1
+
+# Expose port 7860 (HF Spaces default)
+EXPOSE 7860
+
+# Start application
+CMD ["python", "app.py"]