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add support for booting xen on x86_64 in dev and make initramfs alpine

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Alex Zenla
2025-10-14 16:21:56 -07:00
parent e90b45f58d
commit ab4745058e
9 changed files with 77 additions and 25 deletions
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30
hack/dev/vm/Dockerfile.initramfs
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@@ -1,11 +1,27 @@
FROM alpine:3.22@sha256:4bcff63911fcb4448bd4fdacec207030997caf25e9bea4045fa6c8c44de311d1 AS rootfs
RUN apk --no-cache add alpine-base tzdata
RUN rc-update add devfs sysinit && \
rc-update add dmesg sysinit && \
rc-update add mdev sysinit && \
rc-update add cgroups sysinit && \
rc-update add sysctl boot && \
rc-update add hostname boot && \
rc-update add bootmisc boot && \
rc-update add syslog boot && \
rc-update add mount-ro shutdown && \
rc-update add killprocs shutdown && \
rc-update add savecache shutdown && \
ln -s /sbin/init /init && \
echo 'root:root' | chpasswd && \
echo 'sprout' > /etc/hostname && \
echo '' > /etc/motd && \
ln -s /usr/share/zoneinfo/UTC /etc/localtime && \
echo 'hvc0::respawn:/sbin/getty -L hvc0 115200 vt100' >> /etc/inittab
FROM alpine:3.22@sha256:4bcff63911fcb4448bd4fdacec207030997caf25e9bea4045fa6c8c44de311d1 AS build
RUN apk --no-cache add busybox-static
RUN mkdir -p /tmp/initramfs/bin && cp /bin/busybox.static /tmp/initramfs/bin/busybox && \
chroot /tmp/initramfs /bin/busybox --install -s /bin && \
chroot /tmp/initramfs ln -s /bin/init /init && \
cd /tmp/initramfs && \
find . | cpio -R 0:0 --ignore-devno --renumber-inodes -o -H newc --quiet > /initramfs && \
rm -rf /tmp/initramfs
COPY --from=rootfs / /rootfs
WORKDIR /rootfs
RUN find . | cpio -R 0:0 --ignore-devno --renumber-inodes -o -H newc --quiet > /initramfs
FROM scratch AS final
COPY --from=build /initramfs /initramfs