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# =============================================================================
# DOCKERFILE OPTIMIZADO PARA API FASTAPI + TRANSFORMERS (BETO) EN ENTORNOS CPU
# =============================================================================

FROM python:3.12-slim

# 1. Instalar compiladores necesarios para psycopg2 y rapidfuzz
USER root
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    libpq-dev \
    gcc \
    && rm -rf /var/lib/apt/lists/*

# 2. Configurar el usuario exigido por Hugging Face (UID 1000)
RUN useradd -m -u 1000 user
ENV PATH="/home/user/.local/bin:$PATH" \
    PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    HF_HOME=/tmp/huggingface_cache

WORKDIR /app

# 3. Copiar e instalar dependencias con los permisos correctos
COPY --chown=user ./requirements.txt requirements.txt
RUN pip install --no-cache-dir --upgrade pip && \
    pip install --no-cache-dir -r requirements.txt

# 4. Descargar y almacenar los pesos de BETO (NER) en caché durante la construcción
RUN python -c "from transformers import pipeline; pipeline('ner', model='dccuchile/bert-base-spanish-wwm-cased', aggregation_strategy='simple')"
# 5. Copiar el resto del código asignando la propiedad al usuario final
COPY --chown=user . /app

USER user

# 6. Escuchar obligatoriamente en el puerto 7860 exigido por Hugging Face
EXPOSE 7860

CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860"]