Dockerfile

# Same runtime as API; runs health endpoint + Celery worker (see worker_health.py)
FROM python:3.11-slim-bookworm

ENV PYTHONUNBUFFERED=1 \
    PYTHONDONTWRITEBYTECODE=1 \
    PIP_NO_CACHE_DIR=1 \
    PIP_ROOT_USER_ACTION=ignore \
    NO_ALBUMENTATIONS_UPDATE=1 \
    OMP_NUM_THREADS=1 \
    MKL_NUM_THREADS=1 \
    OPENBLAS_NUM_THREADS=1

WORKDIR /app
ENV PYTHONPATH=/app

RUN apt-get update && apt-get install -y --no-install-recommends \
    ffmpeg \
    pkg-config \
    cmake \
    libcairo2 \
    libcairo2-dev \
    libpango-1.0-0 \
    libpango1.0-dev \
    libpangocairo-1.0-0 \
    libgdk-pixbuf-2.0-0 \
    libffi-dev \
    python3-dev \
    texlive-latex-base \
    texlive-fonts-recommended \
    texlive-latex-extra \
    build-essential \
    && rm -rf /var/lib/apt/lists/*

COPY requirements.worker-render.txt .
RUN pip install --upgrade pip setuptools wheel \
    && pip install -r requirements.worker-render.txt

COPY . .

RUN python scripts/prewarm_render_worker.py

ENV PORT=7860 \
    CELERY_WORKER_QUEUES=render
EXPOSE 7860

ENTRYPOINT []
CMD ["sh", "-c", "exec python3 -u worker_health.py"]