initrd/alpine/Dockerfile

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# ------------------------------------------------------------------------
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from alpine:3.15
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add alpine-minirootfs-3.15.0-x86_64.tar.gz /layer/
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workdir /layer
run apk update
run apk add -p . musl lvm2 lvm2-dmeventd udev cryptsetup e2fsprogs btrfs-progs
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run rm -rf usr/share/apk var/cache/apk
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entrypoint ["sh","-c","find |cpio -H newc -o |base64"]