Dockerfile.test

# Dockerfile for testing Charm-Crypto with Python 3.12+
# This mirrors the GitHub Actions CI environment for local debugging
#
# Usage:
#   docker build -f Dockerfile.test --build-arg PYTHON_VERSION=3.13 -t charm-test:3.13 .
#   docker run -it --rm -v $(pwd):/workspace charm-test:3.13

ARG PYTHON_VERSION=3.13
FROM ubuntu:22.04

# Prevent interactive prompts during package installation
ENV DEBIAN_FRONTEND=noninteractive
ENV PYTHONUNBUFFERED=1

# Install system dependencies (mirrors CI environment)
RUN apt-get update && apt-get install -y \
    # Build tools
    build-essential \
    gcc \
    g++ \
    make \
    flex \
    bison \
    libfl-dev \
    wget \
    git \
    # Libraries
    libgmp-dev \
    libssl-dev \
    # Python build dependencies
    software-properties-common \
    # Debugging tools
    gdb \
    strace \
    valgrind \
    vim \
    less \
    # Cleanup
    && rm -rf /var/lib/apt/lists/*

# Install Python from deadsnakes PPA (for 3.12+)
ARG PYTHON_VERSION
RUN add-apt-repository ppa:deadsnakes/ppa && \
    apt-get update && \
    apt-get install -y \
    python${PYTHON_VERSION} \
    python${PYTHON_VERSION}-dev \
    python${PYTHON_VERSION}-venv \
    curl \
    && rm -rf /var/lib/apt/lists/*

# Set Python version as default and create python3-config symlink
RUN update-alternatives --install /usr/bin/python3 python3 /usr/bin/python${PYTHON_VERSION} 1 && \
    update-alternatives --install /usr/bin/python python /usr/bin/python${PYTHON_VERSION} 1 && \
    ln -sf /usr/bin/python${PYTHON_VERSION}-config /usr/bin/python3-config

# Install pip using get-pip.py (Python 3.12+ doesn't include distutils)
RUN curl -sS https://bootstrap.pypa.io/get-pip.py | python3

# Upgrade pip
RUN python3 -m pip install --upgrade pip setuptools wheel

# Build and install PBC library (mirrors CI)
WORKDIR /tmp
RUN wget https://crypto.stanford.edu/pbc/files/pbc-1.0.0.tar.gz && \
    tar -xzf pbc-1.0.0.tar.gz && \
    cd pbc-1.0.0 && \
    ./configure LDFLAGS="-lgmp" && \
    make && \
    make install && \
    ldconfig && \
    cd .. && \
    rm -rf pbc-1.0.0 pbc-1.0.0.tar.gz

# Verify OpenSSL version (should be 3.x on Ubuntu 22.04)
RUN openssl version

# Set working directory
WORKDIR /workspace

# Install Python dependencies (will be overridden by volume mount)
# This layer is cached for faster rebuilds
RUN pip install pytest pytest-timeout hypothesis pyparsing

# Set environment variables
ENV LD_LIBRARY_PATH=/usr/local/lib:$LD_LIBRARY_PATH
ENV PYTHONPATH=/workspace:$PYTHONPATH

# Default command: run bash for interactive debugging
CMD ["/bin/bash"]