Set npm architecture

src/freedombone-image-customise

@@ -567,6 +567,7 @@ install_patchwork() {
     cat <<EOF > $rootdir/usr/bin/install_patchwork
 #!/bin/bash
 cd /etc/patchwork
+echo 'npm_config_arch=ia32' > ~/.npmrc
 npm install electron --save-dev --save-exact
 npm install
 EOF