Add script to install alpine to a usb disk

alpine-install-on-disk.sh

@@ -0,0 +1,102 @@
+#!/bin/sh
+
+if [ $# -ne 2 ]; then
+    echo "$0 disk ssh-keyfile"
+    echo "   disk: which disk to install to"
+    echo "   ssh-keyfile: ssh keys to add into the image"
+    exit 1
+fi
+
+set -e
+set -x
+
+DISK=$1; shift
+SSH_KEYS=$1; shift
+
+MAJOR_VERSION=3.13
+MINOR_VERSION=5
+IMAGE=alpine-minirootfs-$MAJOR_VERSION.$MINOR_VERSION-x86_64.tar.gz
+
+RESOLVCONF=/etc/resolv.conf
+
+working_directory=$(pwd -P)
+rootfs_tmpdir=$(mktemp -d)
+
+rootfs_url="http://dl-cdn.alpinelinux.org/alpine/v$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"
+
+# Partition disk with 1 Linux partition
+sudo sfdisk "$DISK" <<EOF
+label: dos
+,,L
+EOF
+
+# For creation, if an existing filesystem is on the partitions
+sudo mkfs.ext4 -F ${DISK}1
+
+sudo mount ${DISK}1 $rootfs_tmpdir
+
+# 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" $rootfs_tmpdir/etc/resolv.conf
+
+run_root apk update
+run_root apk add linux-lts openrc udev openssh
+
+run_root rc-update add udev
+run_root rc-update add udev-trigger
+run_root rc-update add sshd
+run_root rc-update add networking
+run_root rc-update add hostname
+run_root sed -i 's/root:!::0:::::/root:*::0:::::/' /etc/shadow
+
+sudo tee "$rootfs_tmpdir/etc/network/interfaces" <<EOF
+auto lo
+iface lo inet loopback
+
+auto eth0
+iface eth0 inet6 manual
+  up /sbin/ip link set \$IFACE up
+
+EOF
+
+sudo tee "$rootfs_tmpdir/etc/hostname" <<EOF
+alpine-unconfigured
+EOF
+
+# Setup bootloader
+for dir in dev proc sys; do
+    sudo mount --bind /${dir} ${rootfs_tmpdir}/${dir}
+done
+
+run_root apk add grub-bios
+run_root grub-install ${DISK}
+
+# Cleanup
+run_root rm -f /etc/resolv.conf
+for dir in dev proc sys; do
+    sudo mount --bind /${dir} ${rootfs_tmpdir}/${dir}
+done
+sudo umount  $rootfs_tmpdir
+
+sync
+
+echo "${DISK} has been setup with Alpine Linux"
+
+exit 0

alpine-rebuild-initramfs.sh

@@ -53,7 +53,7 @@ sudo cp "$RESOLVCONF" $rootfs_tmpdir/etc/resolv.conf
 run_root ln -sf /sbin/init /init
 
 run_root apk update
-run_root apk add linux-lts openrc udev openssh rdnssd bonding vlan
+run_root apk add linux-lts openrc udev openssh rdnssd
 # rdnssd
 run_root rc-update add udev
 run_root rc-update add udev-trigger