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bootc-netboot's Introduction

Anaconda PXE files for bootc

Distributing Anaconda installer, shim and bootloader via container registries.

Usage

To pull Anaconda files:

oras pull ghcr.io/lzap/bootc-netboot-example:rhel-9.3.0-x86_64

The contents is (ls output):

vmlinuz
initrd.img
shim.efi
grubx64.efi

Before executing binaries, signature must be verified:

cosign verify --key cosign.pub ghcr.io/lzap/bootc-netboot-example:rhel-9.3.0-x86_64

Publish

Login to the registry:

oras login ghcr.io

The example will use the following environment variables:

ARTIFACT_TYPE=application/vnd.unknown.artifact.v1
MEDIA_TYPE=application/x-netboot-file

Upload new artifacts:

pushd rhel-9.3.0-x86_64

oras push ghcr.io/lzap/bootc-netboot-example:rhel-9.3.0-x86_64 \
    --annotation-file ../annotations.json \
    --config ../empty.json:application/vnd.oci.empty.v1+json \
    --artifact-type $ARTIFACT_TYPE \
    vmlinuz:$MEDIA_TYPE \
    initrd.img:$MEDIA_TYPE \
    shim.efi:$MEDIA_TYPE \
    grubaa64.efi:$MEDIA_TYPE

popd

Sign the artifacts:

cosign sign --key cosign.key -y ghcr.io/lzap/bootc-netboot-example:rhel-9.3.0-x86_64

That is all.

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