Dockerfile

FROM pandoc/extra:latest-ubuntu

# Install Python, Node.js, and emoji font
# chromium-browser on Ubuntu 24.04 is a snap stub unusable in Docker.
# We use Playwright to install a native Chromium binary (supports ARM64).
RUN apt-get update && apt-get install -y --no-install-recommends \
    python3 python3-pip python3-venv \
    nodejs npm \
    fonts-noto-color-emoji \
    # Chromium runtime dependencies (needed by Playwright's Chromium)
    libnss3 libatk1.0-0 libatk-bridge2.0-0 libcups2 libdrm2 \
    libxkbcommon0 libxcomposite1 libxdamage1 libxrandr2 libgbm1 \
    libpango-1.0-0 libcairo2 libasound2t64 libxshmfence1 libxfixes3 \
    && rm -rf /var/lib/apt/lists/*

# Install mermaid-cli (skip Puppeteer's Chromium - wrong arch on ARM)
ENV PUPPETEER_SKIP_DOWNLOAD=true
RUN npm install -g @mermaid-js/mermaid-cli

# Install GitHub markdown CSS
RUN npm install -g github-markdown-css && \
    mkdir -p /usr/local/lib/github-css && \
    cp $(npm root -g)/github-markdown-css/github-markdown-light.css /usr/local/lib/github-css/

# Install Playwright Chromium (provides native ARM64 binary)
RUN npx --yes playwright install chromium

# Create puppeteer config pointing to Playwright's Chromium
RUN CHROME_PATH=$(find /root/.cache/ms-playwright -name chromium -o -name chrome | grep -E '(chrome|chromium)$' | head -1) && \
    echo "{\"executablePath\":\"${CHROME_PATH}\",\"args\":[\"--no-sandbox\"]}" > /usr/local/lib/puppeteer-config.json && \
    echo "Chromium path: ${CHROME_PATH}"

# Install uv for fast Python dependency management
RUN pip install --no-cache-dir --break-system-packages uv

WORKDIR /app

# Install Python dependencies
COPY pyproject.toml uv.lock* ./
RUN uv pip install --system --break-system-packages -e .

# Copy application code
COPY . .

EXPOSE 8000

HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD python3 -c "import urllib.request; urllib.request.urlopen('http://localhost:8000/', timeout=5)" || exit 1

# Override pandoc entrypoint from base image
ENTRYPOINT []
CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8000"]