# Base image
FROM python:3.10-slim

# Set environment variables for HF cache
ENV HF_HOME=/tmp/hf_home
ENV TRANSFORMERS_CACHE=/tmp/hf_home
ENV PYTHONUNBUFFERED=1

# Create cache directory with writable permissions
RUN mkdir -p /tmp/hf_home && chmod -R 777 /tmp/hf_home

# Install OS dependencies needed by torch/transformers
RUN apt-get update && apt-get install -y build-essential git && rm -rf /var/lib/apt/lists/*

# Set working directory
WORKDIR /app

# Copy requirements and install
COPY requirements.txt .
RUN pip install --no-cache-dir --upgrade pip
RUN pip install --no-cache-dir -r requirements.txt

# Copy application code
COPY api.py .

# Expose port
EXPOSE 7860

# Run FastAPI
CMD ["uvicorn", "api:app", "--host", "0.0.0.0", "--port", "7860"]