FROM python:3.9-slim

# Set working directory
WORKDIR /app

# Create cache directory with proper permissions
RUN mkdir -p /app/.cache && chmod 755 /app/.cache

# Set environment variables for cache
ENV HF_HOME=/app/.cache
ENV TRANSFORMERS_CACHE=/app/.cache/transformers
ENV HF_HUB_CACHE=/app/.cache/hub

# Copy requirements first for better caching
COPY requirements.txt .

# Install dependencies
RUN pip install --no-cache-dir --upgrade -r requirements.txt

# Copy application code
COPY . .

# Create cache directories with proper permissions
RUN mkdir -p $HF_HOME $TRANSFORMERS_CACHE $HF_HUB_CACHE && \
    chmod -R 755 /app/.cache

# Expose port
EXPOSE 7860

# Run the application
CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860"]