FROM python:3.9-slim

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

# Set up working directory
WORKDIR /app

# Create cache directories with proper permissions
RUN mkdir -p \
    /tmp/transformers_cache \
    /tmp/huggingface \
    /tmp/whisper_cache && \
    chmod -R 777 /tmp

# Set environment variables
ENV TRANSFORMERS_CACHE=/tmp/transformers_cache
ENV HF_HOME=/tmp/huggingface
ENV WHISPER_CACHE_DIR=/tmp/whisper_cache

# Copy requirements first to leverage Docker cache
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Copy the rest of the application
COPY . .

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