# ── ml-service/Dockerfile (Hugging Face Spaces compatible) ───────────────────

FROM python:3.10-slim

WORKDIR /app

# System deps
RUN apt-get update && apt-get install -y --no-install-recommends \
    gcc \
    libgl1 \
    libglib2.0-0 \
    && rm -rf /var/lib/apt/lists/*

# Create non-root user required by Hugging Face Spaces
RUN useradd -m -u 1000 user
USER user
ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH

WORKDIR /home/user/app

# Install Python deps as non-root user
RUN pip install --upgrade pip --user

# Install PyTorch CPU first (large, separate layer for better caching)
RUN pip install --no-cache-dir --user \
    torch>=2.9.0 torchvision>=0.20.0 \
    --index-url https://download.pytorch.org/whl/cpu

# Install remaining dependencies
RUN pip install --no-cache-dir --user \
    fastapi>=0.110.0 \
    uvicorn>=0.29.0 \
    python-multipart>=0.0.9 \
    transformers>=4.35.2 \
    Pillow>=10.4.0 \
    numpy>=2.0.0 \
    opencv-python-headless \
    anthropic>=0.25.0 \
    pinecone>=3.0.0 \
    python-dotenv>=1.0.0

COPY --chown=user . .

# Download models at build time so they're baked into the image (no cold-start download)
RUN python download_models.py

# HF Spaces requires port 7860
EXPOSE 7860

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