Add build script for lncm-box image

variant-alpine/make_img.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+
+# Creates a zipped & partitioned image file for burning onto SD cards
+# 256MB bootable FAT32L partition with official Alpine linux and lncm box
+# Make sure "parted", "dosfstools" and "zip" are installed
+
+mkdir lncm-workdir
+cd lncm-workdir
+ALP=alpine-rpi-3.8.1-armhf.tar.gz
+BOX=lncm-box-v0.2.1.tar.gz
+IMG=lncm-box-v0.2.1.img
+MNT=/mnt/lncm
+wget http://dl-cdn.alpinelinux.org/alpine/v3.8/releases/armhf/${ALP}
+wget https://github.com/lncm/pi-factory/releases/download/v0.2.1/${BOX}
+dd if=/dev/zero of=$IMG bs=1M count=256
+DEV=$(losetup -f --show $IMG)
+parted -s $DEV mklabel msdos mkpart p fat32 2048s 100% set 1 boot on
+parted -s $DEV print
+mkfs.vfat ${DEV}p1 -IF 32
+mkdir $MNT
+mount ${DEV}p1 $MNT
+tar -xzf $ALP -C ${MNT}/ --no-same-owner
+tar -xzf $BOX -C ${MNT}/ --no-same-owner
+sync
+umount $MNT
+losetup -d ${DEV}
+zip -r ${IMG}.zip $IMG