kind-images

# syntax=docker/dockerfile:1.3-labs
# vim: set ft=dockerfile:

ARG ROOT_IMAGES_TAG=invalid

# override this with --build-arg
ARG KERNEL_VER=bpf-next
ARG KERNEL_IMAGE_TAG=bpf-next

FROM quay.io/lvh-images/root-images-ci:"${ROOT_IMAGES_TAG}" AS root-images
FROM quay.io/lvh-images/kernel-images-ci:"${KERNEL_IMAGE_TAG}" AS kimg
FROM quay.io/lvh-images/lvh:v0.0.19 AS lvh
FROM ubuntu:rolling AS builder

ARG KERNEL_VER=bpf-next
WORKDIR /data
COPY --from=lvh /usr/bin/lvh /usr/bin/lvh
RUN apt-get update --quiet && \
     apt-get upgrade --quiet --yes &&  \
     apt-get install --quiet --yes --no-install-recommends \
          zstd qemu-utils libguestfs-tools linux-image-generic

# this might be counter intuitive but without this package (or one of its
# subpackage), starting qemu with '-device virtio-net-pci,netdev=usernet' will
# fail with 'failed to find romfile "efi-virtio.rom"'
ARG TARGETARCH
RUN if [ "$TARGETARCH" = "arm64" ]; then apt-get install -yq --no-install-recommends qemu-system-x86; fi

COPY --from=kimg /data/kernels /data/kernels
COPY --from=root-images /data/images/kind.qcow2.zst /data/images/kind.qcow2.zst
RUN zstd --decompress --rm --threads=0 /data/images/kind.qcow2.zst

COPY <<EOF /data/images.json
[
    {
        \"name\": \"kind_"${KERNEL_VER}".qcow2\",
        \"parent\": \"kind.qcow2\",
        \"actions\": [
            {
                \"comment\": \"install "${KERNEL_VER}"\",
                \"op\": {
                    \"KernelInstallDir\": \"/data/kernels/"${KERNEL_VER}"\"
                },
                \"type\": \"install-kernel\"
            },
            { \"op\": { \"Hostname\": \"kind-"${KERNEL_VER}"\"}, \"type\": \"set-hostname\" }
        ]
    }
]
EOF

RUN lvh version
# mmdebstrap outputs messages in stderr, so we redirect stderr
RUN LIBGUESTFS_BACKEND_SETTINGS=force_tcg lvh images build --image kind_${KERNEL_VER}.qcow2 --dir /data 2>&1
RUN zstd --compress --rm --threads=0 /data/images/kind_${KERNEL_VER}.qcow2
RUN rm /data/images/*.qcow2

FROM busybox
COPY --from=builder /data/images /data/images