FROM ruby:3.2-slim
ENV DEBIAN_FRONTEND=noninteractive

# Native toolchain + basics Jekyll/gems expect
RUN set -eux; \
  apt-get update; \
  apt-get install -y --no-install-recommends \
    build-essential \
    gcc g++ make \
    libc6-dev \
    pkg-config \
    git \
    curl \
    ca-certificates \
    nodejs; \
  rm -rf /var/lib/apt/lists/*

RUN gem install bundler jekyll