FROM python:3.10-slim

WORKDIR /app

# Install system dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
    git ffmpeg libsm6 libxext6 \
    && rm -rf /var/lib/apt/lists/*

# Ensure numpy compatibility
RUN pip install --no-cache-dir "numpy<2.0"

# ✅ Install safe PyTorch CPU version (2.6.0 works fine for Spaces)
RUN pip install --no-cache-dir torch==2.6.0 torchvision==0.21.0 torchaudio==2.6.0

# Copy project files
COPY . /app

# ✅ Install your app dependencies
RUN pip install --no-cache-dir --upgrade pip && \
    pip install --no-cache-dir fastapi uvicorn transformers pillow langchain langsmith python-multipart

# Use /tmp as Hugging Face cache (prevents write permission issues)
ENV HF_HOME=/tmp/huggingface_cache

# Expose Hugging Face default port
EXPOSE 7860

# ✅ Start FastAPI
CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860"]