FROM python:3.10-slim

# Set environment variables
ENV PYTHONDONTWRITEBYTECODE=1
ENV PYTHONUNBUFFERED=1

# Create a non-root user and home directory
RUN useradd -m -s /bin/bash streamlit_user

# Set working directory
WORKDIR /home/streamlit_user/app

# Install system dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    git \
    curl \
    libgl1-mesa-glx \
    && rm -rf /var/lib/apt/lists/*

# Create model weights directory and assign ownership
RUN mkdir -p /home/streamlit_user/step1x_weights && \
    chown -R streamlit_user:streamlit_user /home/streamlit_user

# Copy requirements and install Python dependencies
COPY requirements.txt ./requirements.txt
RUN pip install --upgrade pip && \
    pip install --no-cache-dir -r requirements.txt

# Copy app source code
COPY src/ ./src/

# Change user to non-root
USER streamlit_user

# Expose Streamlit port
EXPOSE 8501

# Environment settings for Streamlit
ENV STREAMLIT_SERVER_HEADLESS=true

# Run the app
ENTRYPOINT ["streamlit", "run", "src/streamlit_app.py", "--server.port=8501", "--server.address=0.0.0.0"]