FROM python:3.9-slim

# Set working directory
WORKDIR /app

# Install build tools and required system libraries
RUN apt-get update && \
    apt-get install -y --no-install-recommends \
    build-essential \
    gcc \
    g++ \
    libffi-dev \
    libpq-dev \
    libssl-dev \
    && rm -rf /var/lib/apt/lists/*

# Copy and install Python dependencies
COPY requirements.txt .
RUN pip install --upgrade pip && pip install -r requirements.txt

# Copy app files
COPY . .

# Streamlit-specific settings
EXPOSE 8501
CMD ["streamlit", "run", "app.py", "--server.port=8501", "--server.address=0.0.0.0"]