Dockerfile

FROM python:3.11-slim

# Install curl for healthcheck
RUN apt-get update && apt-get install -y --no-install-recommends \
    curl \
    && rm -rf /var/lib/apt/lists/*

# Create non-root user and set up home directory
RUN useradd -m -u 1000 user \
    && mkdir -p /home/user/.local \
    && chown -R user:user /home/user

USER user
ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH

# Set working directory
WORKDIR /home/user/app

# Copy requirements first to leverage Docker cache
COPY --chown=user requirements.txt .

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

# Copy app files
COPY --chown=user app.py presidio_helpers.py .

# Expose Streamlit port
EXPOSE 7860

# Healthcheck
HEALTHCHECK CMD curl --fail http://localhost:7860/_stcore/health || exit 1

# Run Streamlit
CMD ["streamlit", "run", "app.py", "--server.port=7860", "--server.address=0.0.0.0"]