# syntax=docker/dockerfile:1.7

FROM python:3.14-slim
ENV PYTHONUNBUFFERED=1 \
    PYTHONDONTWRITEBYTECODE=1 \
    PIP_NO_CACHE_DIR=1 \
    PIP_DISABLE_PIP_VERSION_CHECK=1 \
    HF_HOME=/models/.huggingface \
    TRANSFORMERS_CACHE=/models/.huggingface \
    ML_MODEL_DIR=/models

RUN apt-get update && apt-get install -y --no-install-recommends \
        ffmpeg \
        libpq5 \
        libjpeg62-turbo \
        libwebp7 \
        libpng16-16 \
        libgl1 \
        libglib2.0-0 \
        ca-certificates \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app

COPY requirements-ml.txt requirements.txt ./
# CPU-only torch: the default PyPI wheel bundles the CUDA runtime (~5.6GB
# layer); this pipeline never uses a GPU. --index-url (not --extra-index-url)
# guarantees only +cpu wheels are considered, so no nvidia-*-cu12 deps.
RUN pip install --index-url https://download.pytorch.org/whl/cpu \
        "torch>=2.12,<3.0" "torchvision>=0.27,<0.28"
RUN pip install -r requirements-ml.txt

COPY backend/ ./backend/
COPY alembic/ ./alembic/
COPY alembic.ini ./
COPY entrypoint.sh ./
RUN chmod +x entrypoint.sh

# Models self-heal into /models on first start (FC-2 implements this)
VOLUME ["/models"]

ENTRYPOINT ["./entrypoint.sh"]
CMD ["ml-worker"]