nginx_wait_for_js

#!/bin/sh
JS_FILE=/usr/lib/nginx/njs_modules/acme.js

# wait until the .js file appears
while ! [ -f $JS_FILE ]
do
  echo "Waiting for $JS_FILE to appear..."
  sleep 1
done

# start nginx in background
echo "Starting nginx..."
$@ &

sleep 3

echo "Watching for changes..."

# when the .js file is modified, reload nginx
inotifywait -m -e create,modify $JS_FILE |
  while read filename
  do
    $1 -s reload
  done