84 lines
2 KiB
Bash
Executable file
84 lines
2 KiB
Bash
Executable file
#!/bin/sh
|
|
|
|
if [ $# -ne 1 ]; then
|
|
echo "$0 ssh-keyfile"
|
|
echo " ssh-keyfile: ssh keys to add into the image"
|
|
exit 1
|
|
fi
|
|
|
|
set -e
|
|
set -x
|
|
|
|
SSH_KEYS=$1; shift
|
|
|
|
MAJOR_VERSION=3.12
|
|
MINOR_VERSION=0
|
|
IMAGE=alpine-minirootfs-$MAJOR_VERSION.$MINOR_VERSION-x86_64.tar.gz
|
|
|
|
RESOLVCONF=/etc/resolv.conf
|
|
|
|
working_directory=$(pwd -P)
|
|
rootfs_tmpdir=$(mktemp -d)
|
|
#rootfs_tmpdir=alpine_${MAJOR_VERSION}-${MINOR_VERSION}-rootfs
|
|
|
|
mkdir -p ${rootfs_tmpdir}
|
|
|
|
rootfs_url="http://dl-cdn.alpinelinux.org/alpine/v$MAJOR_VERSION/releases/x86_64/$IMAGE"
|
|
|
|
run_root () {
|
|
sudo chroot $rootfs_tmpdir /usr/bin/env \
|
|
PATH=/bin:/sbin \
|
|
/bin/sh -c "$*"
|
|
}
|
|
|
|
wget -c "$rootfs_url" -O "$IMAGE"
|
|
|
|
# keep right permissions, use sudo
|
|
sudo tar xf $IMAGE -C $rootfs_tmpdir
|
|
|
|
# Add SSH keys
|
|
run_root mkdir -p root/.ssh
|
|
sudo cp $SSH_KEYS $rootfs_tmpdir/root/.ssh/authorized_keys
|
|
run_root chown root:root root/.ssh/authorized_keys
|
|
run_root chmod 0600 root/.ssh/authorized_keys
|
|
run_root chmod 0700 root/.ssh
|
|
|
|
# Import local resolv.conf.
|
|
sudo cp "$RESOLVCONF" $rootfs_tmpdir/etc/resolv.conf
|
|
|
|
# Make sure init is found by the kernel.
|
|
run_root ln -sf /sbin/init /init
|
|
|
|
run_root apk update
|
|
run_root apk add linux-lts openrc udev openssh
|
|
# rdnssd
|
|
run_root rc-update add udev
|
|
run_root rc-update add udev-trigger
|
|
run_root rc-update add sshd
|
|
# run_root rc-update add rdnssd
|
|
run_root rc-update add networking
|
|
run_root rc-update add hostname
|
|
|
|
sudo tee "$rootfs_tmpdir/etc/network/interfaces" <<EOF
|
|
auto lo
|
|
iface lo inet loopback
|
|
|
|
auto eth0
|
|
iface eth0 inet6 manual
|
|
pre-up ip link set eth0 up
|
|
pre-up echo 1 > /proc/sys/net/ipv6/conf/eth0/accept_ra
|
|
EOF
|
|
|
|
sudo tee "$rootfs_tmpdir/etc/hostname" <<EOF
|
|
alpine-unconfigured
|
|
EOF
|
|
|
|
# Generate iniramfs image
|
|
(cd $rootfs_tmpdir; sudo find . | sudo cpio -H newc -o | gzip -9 > "$working_directory/alpine-initramfs.gz")
|
|
cp "$rootfs_tmpdir/boot/vmlinuz-lts" "$working_directory/alpine-kernel"
|
|
|
|
echo rm -rf "$rootfs_tmpdir"
|
|
|
|
echo "Use alpine-initramfs.gz alpine-kernel from $working_directory"!
|
|
|
|
exit 0
|