43 lines
1.6 KiB
Docker
43 lines
1.6 KiB
Docker
# EPUB3 -> PDF converter (Flask + WeasyPrint) — Coolify / any Docker host
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# WeasyPrint needs pango + fontconfig system libraries; CJK fonts for full-text support.
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FROM python:3.12-slim
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ENV PYTHONDONTWRITEBYTECODE=1 \
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PYTHONUNBUFFERED=1 \
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PORT=8030 \
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DATA_DIR=/app/data \
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PIP_NO_CACHE_DIR=1
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RUN apt-get update && apt-get install -y --no-install-recommends \
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libpango-1.0-0 \
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libpangoft2-1.0-0 \
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libharfbuzz0b \
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libffi8 \
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shared-mime-info \
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fontconfig \
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fonts-dejavu-core \
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fonts-noto-cjk \
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&& rm -rf /var/lib/apt/lists/* && fc-cache -f
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WORKDIR /app
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COPY requirements.txt .
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RUN pip install --no-cache-dir -r requirements.txt
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COPY app.py .
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COPY templates/ ./templates/
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# Persistent data (uploads/output/work) — mount a volume at /app/data
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VOLUME ["/app/data"]
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EXPOSE 8030
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# Single worker: the in-memory JOBS registry must live in one process.
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# Threads give concurrency while conversions run in their own worker threads.
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CMD ["sh", "-c", "gunicorn app:app --bind 0.0.0.0:${PORT} --workers 1 --threads 8 --timeout 1200 --graceful-timeout 30 --access-logfile - --error-logfile -"]
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# Health probe: pure-python urllib (slim image has no curl/wget).
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# Coolify detects this and skips its own curl/wget-based check. Kept as the final line
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# because Coolify's parser appends the following line to the HEALTHCHECK command.
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HEALTHCHECK --interval=30s --timeout=10s --start-period=30s --retries=3 CMD python -c "import urllib.request,sys; sys.exit(0 if urllib.request.urlopen('http://127.0.0.1:8030/health', timeout=5).status==200 else 1)"
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