FROM python:3.9-slim

WORKDIR /app

# Set matplotlib config directory to a writable location
ENV MPLCONFIGDIR=/tmp/matplotlib

COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt && \
    mkdir -p /tmp/matplotlib && \
    chmod -R 777 /tmp/matplotlib

COPY . .

EXPOSE 7860

CMD ["python", "app.py"]