title: Change directory in pipe line bitbucket
body: <p>My folder structure:</p>
  
  <pre><code>-backend
  -frontend
  </code></pre>
  
  <p>My reactapp is placed in <code>frontend</code> directory.</p>
  
  <pre><code>image: node:10.15.3
  
  pipelines:
    default:
      - step:
          caches:
            - node
          script: # Modify the commands below to build your repository.
            - yarn install
            - yarn test
            - yarn build
  </code></pre>
  
  <p>This one fails. How do I go to the frontend-directory to run this?</p>