Build specified initramfs image if it doesn't exists

Author: piranna

package.json

@@ -5,7 +5,7 @@
   "scripts": {
     "BigRedButton": "scripts/BigRedButton",
     "build": "scripts/build",
-    "install": "prebuild-install -d https://github.com/NodeOS/nodeos-initramfs/releases/download/v{version}/{platform}-{arch}.tar.gz || (buildDependencies && npm run build)",
+    "install": "(prebuild-install -d https://github.com/NodeOS/nodeos-initramfs/releases/download/v{version}/{platform}-{arch}.tar.gz && scripts/checkOut) || (buildDependencies && npm run build)",
     "start": "scripts/start",
     "postinstall": "scripts/postinstall",
     "pretest": "scripts/pretest",

scripts/checkOut

@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+
+set -o pipefail
+
+TOOLCHAIN=`node -p "require('nodeos-cross-toolchain')"` &&
+source $TOOLCHAIN/scripts/adjustEnvVars.sh              || exit $?
+
+test -f out/$CPU-${SINGLE_USER-"nodeos-boot-multiUser"}