BuildSystem: Add instructions + fixes to build system

You can now easily build with clean ubuntu install

script/image-create.sh

@@ -87,7 +87,7 @@ sudo partprobe $LOOP_DEV
 PARTITION1=${LOOP_DEV}p1
 PARTITION2=${LOOP_DEV}p2
 
-sudo mkfs.ext2 -q $PARTITION2
+sudo mkfs.ext2 -q -b 1024 $PARTITION2
 
 sudo mkdir -p $MOUNT_DIR || { echo "Failed to create banan mount dir."; exit 1; }
 

script/install-bootloader.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 set -e