let there be light

Dockerfile

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+FROM python:3.12-slim
+
+WORKDIR /app
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY app.py storage.py fetcher.py epub_builder.py ./
+COPY templates/ ./templates/
+COPY static/ ./static/
+
+ENV DATA_DIR=/data \
+    ARTICLES_PER_PAGE=8 \
+    PORT=8080 \
+    EPUB_SPLIT_THRESHOLD_BYTES=50000 \
+    EPUB_SPLIT_TARGET_BYTES=25000
+
+VOLUME /data
+
+EXPOSE 8080
+
+CMD gunicorn --workers 1 --bind 0.0.0.0:${PORT} --timeout 120 app:app