# Start from the same base as our target
FROM ubuntu:24.04

# Set non-interactive mode for apt to prevent it from asking questions
ENV DEBIAN_FRONTEND=noninteractive

# Update, install build tools, and install chrony's specific build-deps
RUN apt-get update && \
    apt-get install -y \
    build-essential \
    debhelper \
    devscripts \
    dpkg-dev \
    git \
    curl \
    gnupg \
    # Chrony's specific dependencies (from its debian/control file)
    libcap-dev \
    libedit-dev \
    libgnutls28-dev \
    libnss3-dev \
    libseccomp-dev \
    # Clean up apt cache
    && rm -rf /var/lib/apt/lists/*