Dockerfile

FROM python:3.9-slim

WORKDIR /app

COPY . .

# Install dependencies
RUN pip install --no-cache-dir -r requirements.txt

# Create uploads directory and feedback.json with proper permissions
RUN mkdir -p static/uploads && \
    touch feedback.json && \
    chmod 777 static/uploads && \
    chmod 666 feedback.json

# Run as non-root user for security
RUN adduser --disabled-password --gecos '' appuser
USER appuser

CMD ["gunicorn", "--bind", "0.0.0.0:7860", "app:app"]