Stop after first build.

Jenkinsfile

@@ -1,4 +1,8 @@
 node ("make") {
+    stage('checkout tools') {
+        checkout scm
+    }
+
     stage('checkout') {
         checkout([
             $class: 'GitSCM',

build.sh

@@ -1,4 +1,5 @@
-#!/bin/sh
+#!/usr/bin/env bash
+set -euo errexit
 
 platforms='
     CONFIG_TARGET_arm64=y
@@ -30,4 +31,5 @@ for platform in $platforms; do
     # Build image
     make defconfig
     make -j4
+    exit 1
 done

rename.sh

@@ -1,4 +1,5 @@
-#!/bin/bash
+#!/usr/bin/env bash
+set -euo errexit
 
 if [ $# -ne 2 -o ! -d "$2" ]; then
     echo "usage: $0 <ident> <folder>"