FROM python:3.9-slim

WORKDIR /app

# Copy requirements first for better caching
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Copy application files
COPY . .

# Create necessary directories with proper permissions
RUN mkdir -p /tmp/.streamlit && chmod 777 /tmp/.streamlit
RUN mkdir -p ~/.streamlit && chmod 777 ~/.streamlit

# Set environment variables
ENV STREAMLIT_CONFIG_DIR=/tmp/.streamlit
ENV STREAMLIT_SERVER_HEADLESS=true
ENV STREAMLIT_SERVER_PORT=7860

EXPOSE 7860

CMD ["streamlit", "run", "src/streamlit_app.py", "--server.port=7860", "--server.address=0.0.0.0"]