title: Elastic Beanstalk run post deploy script
body: <p>My node.js app consists of two things, an express backend and a react frontend.</p>
  
  <p>I have two package.json files in this structure</p>
  
  <pre><code>package.json 
  /app/package.json
  </code></pre>
  
  <p>What I want to do is run a script in my frontend folder, app, that builds my code.</p>
  
  <p>the script I want to run is <code>npm install</code> and <code>npm run build</code>
  How do I run this script after a deploy have happened?</p>
  
  <pre><code>commands:
      01_app_npm_install:
          command: npm install
          cwd: app/
      02_app_npm_build:
          command: npm run build
          cwd: app/
  </code></pre>
  
  <p>But it returns an error saying that "No such file or direc
  tory: 'app/'."</p>
  
  <p>Is this possible to do on aws elastic beanstalk?</p>