Dockerfile

# ── Base image ────────────────────────────────────────────────────────────────
FROM python:3.12-slim

# ── System deps: LibreOffice + fonts + cleanup ─────────────────────────────────
# LibreOffice is needed for docx→pdf conversion and docx-as-pdf rendering.
# fonts-liberation gives clean Latin fonts; fonts-noto covers Arabic/CJK/etc.
RUN apt-get update && apt-get install -y --no-install-recommends \
        libreoffice \
        libreoffice-writer \
        fonts-liberation \
        fonts-noto \
        fonts-noto-cjk \
        fonts-arabic \
        libgl1 \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/*

# ── Working directory ──────────────────────────────────────────────────────────
WORKDIR /app

# ── Python deps (install before copying code for better layer caching) ─────────
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# ── Copy application code ──────────────────────────────────────────────────────
COPY . .

# ── Runtime folders (Railway mounts an ephemeral disk here) ───────────────────
RUN mkdir -p uploads output

# ── Expose port (Railway reads $PORT at runtime) ───────────────────────────────
EXPOSE 5050

# ── Start with gunicorn (production-grade, multi-worker) ──────────────────────
# --timeout 120  gives LibreOffice conversions enough time to finish
# --workers 2    enough for personal use without eating too much RAM
CMD gunicorn app:app \
      --bind 0.0.0.0:${PORT:-5050} \
      --workers 2 \
      --timeout 120 \
      --keep-alive 5 \
      --access-logfile - \
      --error-logfile -