FROM python:3.9-slim

WORKDIR /app

# Install system dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    libglib2.0-0 \
    libsm6 \
    libxext6 \
    libxrender-dev \
    libgl1-mesa-glx \
    && rm -rf /var/lib/apt/lists/*

# Copy requirements and install
COPY requirements.txt .
RUN pip install --upgrade pip setuptools wheel
RUN pip install --no-cache-dir -r requirements.txt

# Set environment variable recommended by the error message
ENV PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python

# Copy code
COPY . .

EXPOSE 7860

CMD ["python", "app.py"]