diff --git a/contrib/mkimage-alpine.sh b/contrib/mkimage-alpine.sh new file mode 100755 index 0000000000..7444ffafb9 --- /dev/null +++ b/contrib/mkimage-alpine.sh @@ -0,0 +1,82 @@ +#!/bin/sh + +set -e + +[ $(id -u) -eq 0 ] || { + printf >&2 '%s requires root\n' "$0" + exit 1 +} + +usage() { + printf >&2 '%s: [-r release] [-m mirror] [-s]\n' "$0" + exit 1 +} + +tmp() { + TMP=$(mktemp -d /tmp/alpine-docker-XXXXXXXXXX) + ROOTFS=$(mktemp -d /tmp/alpine-docker-rootfs-XXXXXXXXXX) + trap "rm -rf $TMP $ROOTFS" EXIT TERM INT +} + +apkv() { + curl -s $REPO/$ARCH/APKINDEX.tar.gz | tar -Oxz | + grep '^P:apk-tools-static$' -A1 | tail -n1 | cut -d: -f2 +} + +getapk() { + curl -s $REPO/$ARCH/apk-tools-static-$(apkv).apk | + tar -xz -C $TMP sbin/apk.static +} + +mkbase() { + $TMP/sbin/apk.static --repository $REPO --update-cache --allow-untrusted \ + --root $ROOTFS --initdb add alpine-base +} + +conf() { + printf '%s\n' $REPO > $ROOTFS/etc/apk/repositories +} + +pack() { + local id + id=$(tar --numeric-owner -C $ROOTFS -c . | docker import - alpine:$REL) + + docker tag $id alpine:latest + docker run -i -t alpine printf 'alpine:%s with id=%s created!\n' $REL $id +} + +save() { + [ $SAVE -eq 1 ] || return + + tar --numeric-owner -C $ROOTFS -c . | xz > rootfs.tar.xz +} + +while getopts "hr:m:s" opt; do + case $opt in + r) + REL=$OPTARG + ;; + m) + MIRROR=$OPTARG + ;; + s) + SAVE=1 + ;; + *) + usage + ;; + esac +done + +REL=${REL:-edge} +MIRROR=${MIRROR:-http://nl.alpinelinux.org/alpine} +SAVE=${SAVE:-0} +REPO=$MIRROR/$REL/main +ARCH=$(uname -m) + +tmp +getapk +mkbase +conf +pack +save