Check for presence of node

src/freedombone-image-customise

     chroot "$rootdir" apt-get -yq install g++ m4 libtool automake nodejs curl
     chroot "$rootdir" apt-get -yq install libxext-dev libxtst-dev libxkbfile-dev
 
-    chroot "$rootdir" which node
-    chroot "$rootdir" which nodejs
+    if [ -f $rootdir/usr/bin/nodejs ]; then
+        cp $rootdir/usr/bin/nodejs $rootdir/usr/bin/node
+    fi
+    if [ ! -f $rootdir/usr/bin/node ]; then
+        echo $'/usr/bin/node not found'
+        exit 7235728
+    fi
     wget https://www.npmjs.com/install.sh -O $rootdir/root/npm_install.sh
     if [ ! -f $rootdir/root/npm_install.sh ]; then
         echo $'Unable to download npm installer'