chown in chroot

src/freedombone-image-customise

 	else
 		sed -i "s/ZeroNet commit.*/ZeroNet commit:$ZERONET_COMMIT/g" $COMPLETION_FILE
 	fi
-	chown -R zeronet:zeronet $rootdir/opt/zeronet
+	chroot "$rootdir" chown -R zeronet:zeronet /opt/zeronet
 
 	# Hack to ensure that the file access port is opened
 	# This is because zeronet normally relies on an internet site
 	if [ ! -d $rootdir/opt/tracker ]; then
 		mkdir $rootdir/opt/tracker
 	fi
-	chown -R tracker:tracker $rootdir/opt/tracker
+	chroot "$rootdir" chown -R tracker:tracker /opt/tracker
 
 	# publish regularly
 	echo "* *     * * *   root    zeronetavahi > /dev/null" >> $rootdir/etc/crontab