FROM python:3.11.9-slim

# Install necessary system packages
RUN apt-get update && apt-get install -y \
    build-essential \
    libpq-dev \
    gcc \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app

# Upgrade pip
RUN pip install --upgrade pip

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

# Create cache directory for Hugging Face Transformers
ENV TRANSFORMERS_CACHE=/tmp/huggingface_cache
RUN mkdir -p /tmp/huggingface_cache && chmod 777 /tmp/huggingface_cache

# Copy application code
COPY . .

# Set permissions for Hugging Face Space (requires non-root user or open permissions for /app/data if any)
RUN chmod -R 777 /app

# Run migrations and start FastAPI server
CMD uvicorn server:app --host 0.0.0.0 --port 7860