Dockerfile

FROM python:3.10-slim

# System deps for Blender headless + extracting .tar.xz
RUN apt-get update && apt-get install -y \
    wget xz-utils xvfb libxi6 libxrender1 libxxf86vm1 libxfixes3 libxinerama1 \
    libgl1 libglib2.0-0 ca-certificates \
 && rm -rf /var/lib/apt/lists/*

# Install Blender 3.6 LTS (latest point as of now)
WORKDIR /opt
RUN wget -q https://download.blender.org/release/Blender3.6/blender-3.6.18-linux-x64.tar.xz \
 && tar -xJf blender-3.6.18-linux-x64.tar.xz \
 && ln -s /opt/blender-3.6.18-linux-x64/blender /usr/local/bin/blender

# Python deps
WORKDIR /app
COPY requirements.txt /app/requirements.txt
RUN pip install --no-cache-dir -r /app/requirements.txt

# App code
COPY app.py /app/app.py
COPY generate_book.py /app/generate_book.py

ENV PORT=7860
CMD ["python", "app.py"]