# 1. Start with a stable base image
FROM python:3.10.13-slim-bullseye

# 2. Install git as the root user
RUN apt-get update && apt-get install -y --no-install-recommends git && \
    apt-get clean && rm -rf /var/lib/apt/lists/*

# 3. Create a non-root user for security
RUN useradd --create-home --shell /bin/bash --uid 1000 user

# 4. Set the working directory in the new user's home
WORKDIR /home/user/app

# 5. Copy files and install dependencies
COPY ./requirements.txt .
COPY ./mine_diffs.py .
RUN pip install --no-cache-dir --upgrade -r requirements.txt

# 6. Change ownership of the app directory to the non-root user.
# This is the critical step to grant write permissions.
RUN chown -R user:user /home/user/app

# 7. Switch to the non-root user
USER user

# 8. Run the script automatically on startup
CMD ["python", "mine_diffs.py"]