FROM python:3.10-slim

WORKDIR /app

# 1. INSTALL SYSTEM DEPENDENCIES FIRST
RUN apt-get update && apt-get install -y \
    build-essential \
    cmake \
    pkg-config \
    git \
    && rm -rf /var/lib/apt/lists/*

# 2. COPY AND INSTALL PYTHON PACKAGES
COPY requirements.txt .
RUN pip install --no-cache-dir --upgrade pip && \
    pip install --no-cache-dir -r requirements.txt

# 3. COPY APPLICATION CODE
COPY . .

# 4. SET CACHE DIRECTORIES (CRITICAL FOR HUGGING FACE SPACES)
ENV HF_HOME=/tmp
ENV TRANSFORMERS_CACHE=/tmp
ENV HUGGINGFACE_HUB_CACHE=/tmp
ENV XDG_CACHE_HOME=/tmp

# 5. CREATE WRITABLE DIRECTORY FOR RUNTIME
RUN mkdir -p /tmp && chmod 777 /tmp

EXPOSE 7860

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