Files
ctf/2026/cscg/misc/table-madness/service-target/Dockerfile
2026-04-10 03:31:12 +02:00

46 lines
1.5 KiB
Docker

FROM debian:bookworm AS builder
RUN \
--mount=type=cache,target=/var/cache/apt,sharing=locked \
--mount=type=cache,target=/var/lib/apt,sharing=locked \
apt-get update && apt-get install -y --no-install-recommends \
libguestfs-tools cloud-image-utils curl linux-image-amd64 \
&& rm -rf /var/lib/apt/lists/*
WORKDIR /build
RUN chmod 0644 /boot/vmlinuz*
RUN curl -Lo debian.qcow2 https://cloud.debian.org/images/cloud/bookworm/20260316-2418/debian-12-nocloud-amd64-20260316-2418.qcow2 && \
echo "661a11d853616ba72913ace404961a28350c58eb4041edd2c847aec932d5b99b debian.qcow2" | sha256sum --check
COPY challenge.service flagger.py ipset.save iptables.save .
RUN virt-customize -a debian.qcow2 \
--update \
--install iptables \
--install ipset \
--upload iptables.save:/iptables.save \
--upload ipset.save:/ipset.save \
--upload challenge.service:/etc/systemd/system/challenge.service \
--upload flagger.py:/flagger.py \
--run-command 'systemctl daemon-reload && systemctl enable challenge.service' \
--run-command 'rm -rf /var/lib/apt/lists/*'
FROM debian:bookworm-slim
RUN \
--mount=type=cache,target=/var/cache/apt,sharing=locked \
--mount=type=cache,target=/var/lib/apt,sharing=locked \
apt-get update && apt-get install -y --no-install-recommends \
qemu-system-x86 qemu-utils qemu-kvm \
&& rm -rf /var/lib/apt/lists/*
COPY --from=builder /build/debian.qcow2 /vm/
COPY flag.txt /vm/
COPY entrypoint.sh /entrypoint.sh
RUN chmod +x /entrypoint.sh
CMD ["/entrypoint.sh"]