# Use a lightweight Python base image (CPU only)
FROM python:3.11-slim

# Environment variables
ENV HF_HOME=/app/hf_cache \
    TRANSFORMERS_CACHE=/app/hf_cache \
    GRADIO_SERVER_NAME=0.0.0.0 \
    GRADIO_SERVER_PORT=7860 \
    PYTHONUNBUFFERED=1 \
    TOKENIZERS_PARALLELISM=false

# Set working directory
WORKDIR /app

# Install system dependencies (needed by torch/transformers)
RUN apt-get update && apt-get install -y --no-install-recommends \
    git \
    wget \
    build-essential \
    && rm -rf /var/lib/apt/lists/*

# Create cache directory with open permissions
RUN mkdir -p /app/hf_cache && chmod -R 777 /app/hf_cache

# Copy requirements first for Docker cache efficiency
COPY requirements.txt .

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

# Copy the rest of the app
COPY . .

# Expose Gradio port
EXPOSE 7860

# Run the app
CMD ["python", "app.py"]