# Use Python 3.10 as base
FROM python:3.10-slim

# 1. Install System Dependencies
# libgl1-mesa-glx: Required for OpenCV
# libasound2-dev & libssl-dev: Required for Azure Speech SDK
# ffmpeg: Helper for audio processing
RUN apt-get update && apt-get install -y \
    libgl1-mesa-glx \
    libglib2.0-0 \
    libasound2 \
    libasound2-plugins \
    libssl-dev \
    ffmpeg \
    && rm -rf /var/lib/apt/lists/*

# 2. Setup Work Directory
WORKDIR /app

# 3. Install Python Dependencies
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# 4. Copy Server Code
COPY app.py .

# 5. Security: Create non-root user (Mandatory for HF Spaces)
RUN useradd -m -u 1000 user
USER user
ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH

# 6. Expose the specific HF port
EXPOSE 7860

# 7. Start Command using Gunicorn + Eventlet
CMD ["gunicorn", "--worker-class", "eventlet", "-w", "1", "--bind", "0.0.0.0:7860", "app:app"]