# Use a lightweight Python base image
FROM python:3.9-slim

# Set working directory
WORKDIR /app

# Create a non-root user (Security best practice & required by some HF environments)
RUN useradd -m -u 1000 user
USER user
ENV PATH="/home/user/.local/bin:$PATH"

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

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

# Copy the rest of the application files
COPY --chown=user app.py app.py
COPY --chown=user navy_acronyms_clean.json navy_acronyms_clean.json

# Expose the port Hugging Face expects
EXPOSE 7860

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