Dockerfile

# 1. Use Python 3.10
FROM python:3.10.12-slim

# 2. Setup User 1000
RUN useradd -m -u 1000 user

# 3. Set Working Directory
WORKDIR /app

# 4. Install System Tools (as root)
RUN apt-get update && apt-get install -y \
    build-essential \
    curl \
    unzip \
    && rm -rf /var/lib/apt/lists/*

# 5. CRITICAL FIX: Give the user ownership of the /app folder
# This allows 'unzip' to create new folders inside /app
RUN chown user:user /app

# 6. Switch to the non-root user
USER user
ENV PATH="/home/user/.local/bin:$PATH"

# 7. Copy Requirements & Install
COPY --chown=user:user requirements.txt .
RUN pip install --no-cache-dir --upgrade pip && \
    pip install --no-cache-dir -r requirements.txt

# 8. Copy Application Code
COPY --chown=user:user . .

# 9. Unzip Models
# Now this will work because 'user' owns the folder!
RUN unzip kaggle_checkpoints.zip && rm kaggle_checkpoints.zip

# 10. Set Environment Variables
ENV STREAMLIT_SERVER_HEADLESS=true
ENV STREAMLIT_SERVER_ADDRESS=0.0.0.0
ENV STREAMLIT_SERVER_PORT=7860

# 11. Expose Port
EXPOSE 7860

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