Create Dockerfile

Dockerfile

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+FROM python:3.10-slim
+
+# System deps for Blender headless
+RUN apt-get update && apt-get install -y \
+    wget xvfb libxi6 libgconf-2-4 libxrender1 libxxf86vm1 libxfixes3 libxinerama1 \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install Blender 3.6 LTS headless
+WORKDIR /opt
+RUN wget -q https://download.blender.org/release/Blender3.6/blender-3.6.13-linux-x64.tar.xz \
+ && tar -xf blender-3.6.13-linux-x64.tar.xz \
+ && ln -s /opt/blender-3.6.13-linux-x64/blender /usr/local/bin/blender
+
+# App 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"]