FROM python:3.9-slim

# Prevent Python from writing pyc files
ENV PYTHONDONTWRITEBYTECODE=1
ENV PYTHONUNBUFFERED=1

# Install system dependencies
RUN apt-get update && apt-get install -y \
    build-essential \
    gcc \
    libglib2.0-0 \
    libgl1 \
    && rm -rf /var/lib/apt/lists/*

# Set work directory
WORKDIR /app

# Copy requirements first (better caching)
COPY requirements.txt .

# Upgrade pip and install dependencies
RUN pip install --upgrade pip \
    && pip install --no-cache-dir -r requirements.txt

# Copy app code
COPY . .

# Streamlit port
EXPOSE 8501

# Run Streamlit
CMD ["streamlit", "run", "streamlit_app.py", "--server.address=0.0.0.0", "--server.port=8501"]