Remove root passwords from rootfs

Author: gsingh93

scripts/arch_specific.sh

@@ -8,6 +8,8 @@
 #  ------------    ------    -------
 #  ##ARCH_TTY##    ttyS0     ttyAMA0
 
+set -o errexit
+
 ARCH="$1"
 ROOTFS_DIR="$2"
 
@@ -20,3 +22,5 @@ fi
 
 sed -i "s/##ARCH_TTY##/${TTY}/g" "$INITTAB_PATH"
 sed -i "s/##ARCH_TTY##/${TTY}/g" "${ROOTFS_DIR}/.profile"
+
+sed -i "s/root:x:/root::/g" "${ROOTFS_DIR}/etc/passwd"