FROM python:3.11-slim

ENV PYTHONUNBUFFERED=1 \
    OMP_NUM_THREADS=2 \
    NTHREADS=2 \
    HF_HOME=/tmp/hf \
    HF_HUB_OFFLINE=1 \
    TRANSFORMERS_OFFLINE=1 \
    TOKENIZERS_PARALLELISM=false

WORKDIR /app

# lightgbm needs this system library
RUN apt-get update && apt-get install -y --no-install-recommends libgomp1 \
    && rm -rf /var/lib/apt/lists/*

# --- ESM block: DELETE these 2 lines (and the 'transformers' line in requirements.txt) for Stage 1 ---
RUN pip install --no-cache-dir torch==2.4.1 --index-url https://download.pytorch.org/whl/cpu
# --- end ESM block ---

COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

COPY features.py predict.py ./
COPY weights ./weights