Dockerfile

FROM python:3.9-slim

# Create non-root user for security
RUN useradd -m appuser && mkdir -p /app && chown -R appuser:appuser /app

WORKDIR /app

# Install dependencies
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Create .streamlit directory and config file
RUN mkdir -p /app/.streamlit && chown appuser:appuser /app/.streamlit
COPY .streamlit/config.toml /app/.streamlit/
RUN chown appuser:appuser /app/.streamlit/config.toml

# Copy application files
COPY . .

# Switch to non-root user
USER appuser

# Set default port
ENV PORT=8501

EXPOSE 8501

CMD streamlit run app.py --server.port ${PORT} --server.fileWatcherType=none --logger.level=debug