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Add ubuntu example image
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Signed-off-by: Shawn Wang <[email protected]>
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shawn111 committed Dec 5, 2024
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## composefs part
##
## build composefs related binaries, like mkcomposefs
## https://github.com/containers/composefs-rs/pull/45#pullrequestreview-2479501125
##
## FIXME: This part could replace by a composefs deb package.
##


## cfsctl oci pull docker.io/shawn111/cfs-images:ubuntu
## cfsctl oci prepare-boot [image id]

FROM ubuntu:devel AS composefs
RUN apt update

RUN DEBIAN_FRONTEND=noninteractive apt install --no-install-recommends -y git autoconf m4 libglib2.0-dev libtool bison \
liblzma-dev e2fslibs-dev libgpgme-dev libsystemd-dev \
make libfuse3-dev \
gcc meson libssl-dev \
ca-certificates
RUN git clone https://github.com/containers/composefs.git /cfs
WORKDIR /cfs
RUN meson setup target --prefix=/cfs/target/usr --default-library=shared -Dfuse=enabled
RUN meson compile -C target
RUN meson install -C target


## kernel part (kernel/initrd/bls)
##
## fetch v6.12 kernel (curl command could be removed after 6.12 kernel in repos)
## - mainline ppa, only provide packages not repo
##
FROM ubuntu:devel AS kernel
COPY extra /
RUN apt update
RUN apt install -y kmod linux-base libelf1t64
RUN apt install -y curl

RUN curl -Lf --remote-name-all https://kernel.ubuntu.com/mainline/v6.12/amd64/linux-headers-6.12.0-061200-generic_6.12.0-061200.202411220723_amd64.deb \
https://kernel.ubuntu.com/mainline/v6.12/amd64/linux-headers-6.12.0-061200_6.12.0-061200.202411220723_all.deb \
https://kernel.ubuntu.com/mainline/v6.12/amd64/linux-image-unsigned-6.12.0-061200-generic_6.12.0-061200.202411220723_amd64.deb \
https://kernel.ubuntu.com/mainline/v6.12/amd64/linux-modules-6.12.0-061200-generic_6.12.0-061200.202411220723_amd64.deb && \
dpkg -i *.deb

# install dracut related packages to build initrd
RUN DEBIAN_FRONTEND=noninteractive apt install -y systemd udev dosfstools dracut btrfs-progs strace
RUN dracut \
-a "systemd-initrd composefs bash" \
-d "erofs overlay" \
-I "/usr/bin/strace" \
--kver $(ls /usr/lib/modules) \
--no-hostonly \
/usr/lib/modules/$(cd /usr/lib/modules && echo *)/initramfs.img --force

# generate bls configation files
RUN echo "console=ttyS0,115200 console=tty0" >> /etc/kernel/cmdline
RUN kernel-install add $(ls /usr/lib/modules) /boot/vmlinuz /usr/lib/modules/$(cd /usr/lib/modules && echo *)/initramfs.img
RUN ln -s /boot /boot/boot

FROM ubuntu:devel AS base
COPY extra /
COPY --from=kernel /usr/lib/modules /usr/lib/modules
COPY --from=kernel /boot /boot
COPY --from=composefs /cfs/target/usr /usr
COPY cfsctl /usr/bin
RUN <<EOF
set -eux
touch /etc/machine-id
apt update
DEBIAN_FRONTEND=noninteractive apt install -y systemd udev podman skopeo dosfstools btrfs-progs netctl
systemctl enable systemd-networkd systemd-resolved
passwd -d root

mkdir /sysroot
mkdir /composefs-meta
mv /boot /composefs-meta
mkdir /boot
EOF
RUN true

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