FROM debian:bookworm

# Install necessary packages for setting up the Docker repository
RUN apt update && \
    apt install --no-install-recommends -y \
        ca-certificates curl gnupg dpkg lsb-release && \
    rm -rf /var/lib/apt/lists/*

# Add Docker’s official GPG key and repo
RUN install -m 0755 -d /etc/apt/keyrings && \
    curl -fsSL https://download.docker.com/linux/debian/gpg | gpg --dearmor -o /usr/share/keyrings/docker-ce.gpg && \
    echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-ce.gpg] \
    https://download.docker.com/linux/debian $(lsb_release -sc) stable" > /etc/apt/sources.list.d/docker.list

# Install full Docker Engine + dependencies required to run dockerd
RUN apt update && \
    apt install --no-install-recommends -y \
        docker-ce docker-ce-cli containerd.io \
        docker-buildx-plugin docker-compose-plugin \
        iptables iproute2 xz-utils e2fsprogs util-linux && \
    rm -rf /var/lib/apt/lists/*

# Add an entrypoint to start the daemon
COPY dockerd-entrypoint.sh /usr/local/bin/
ENTRYPOINT ["dockerd-entrypoint.sh"]

CMD ["bash"]