Create Elemental Seed Images

Dockerfile

FROM registry.suse.com/rancher/elemental-teal/5.4:1.2.3 AS build

RUN zypper --non-interactive rm --clean-deps \
        bash-completion jq k9s podman vim-small \
        kernel-firmware*
    
# IMPORTANT: /etc/os-release is used for versioning/upgrade. The
# values here should reflect the tag of the image currently being built
ARG IMAGE_REPO=norepo
ARG IMAGE_TAG=latest
RUN echo "IMAGE_REPO=${IMAGE_REPO}"          > /etc/os-release && \
    echo "IMAGE_TAG=${IMAGE_TAG}"           >> /etc/os-release && \
    echo "IMAGE=${IMAGE_REPO}:${IMAGE_TAG}" >> /etc/os-release

FROM registry.suse.com/rancher/elemental-teal/5.4:1.2.3 AS elemental
ARG TARGETARCH
COPY --from=os / rootfs
WORKDIR /elemental-iso

RUN elemental build-iso \
        dir:/rootfs \
        --bootloader-in-rootfs \
        --squash-no-compression \
        -n "elemental-teal-${TARGETARCH}"

FROM registry.suse.com/bci/bci-busybox:latest AS seed
COPY --from=elemental /elemental-iso /elemental-iso