FROM docker:27-cli

# Install Node.js + build essentials (needed for GitHub Actions checkout@v4, etc.)
RUN apt-get update && \
    apt-get install -y --no-install-recommends \
      nodejs \
      npm \
      git \
      curl \
      ca-certificates \
      build-essential \
      python3 && \
    rm -rf /var/lib/apt/lists/*

# Verify installations
RUN docker --version && node --version && git --version