docker/Dockerfile.sandbox

# 🦅 PatchHawk: Isolated Python Sandbox
# Used for the EXECUTE_SANDBOX (Stage 1) and SUBMIT_PATCH (Stage 3) validation.

FROM python:3.11-slim

# System dependencies for unit testing
RUN apt-get update && apt-get install -y --no-install-recommends \
    gcc \
    python3-dev \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app

# Pre-install pytest for the validator
RUN pip install --no-cache-dir pytest

# Create a non-privileged user for security
RUN useradd -m sandbox
USER sandbox

# The environment mounts the code into /app at runtime
CMD ["python3"]