Dockerfile

# Base image
FROM python:3.10-slim

# Create non-root user
RUN useradd -m -u 1000 user
USER user
ENV PATH="/home/user/.local/bin:$PATH"

# Set workdir
WORKDIR /app

# Copy requirements first (for better cache)
COPY --chown=user requirements.txt .

# Install deps
RUN pip install --no-cache-dir --upgrade pip \
    && pip install --no-cache-dir -r requirements.txt

# Copy app files
COPY --chown=user . .

# Expose HF port
EXPOSE 7860

# Run Flask app
CMD ["python", "app.py"]