title: how to run bower install inside subfolder in Docker
body: <pre><code>--myproject
  ---app
  ----bower.json
  ----index.html
  ---package.json
  </code></pre>
  
  <p>My project folder structure is like that. What I want is I want to run <code>bower install</code> command in docker file before <code>npm install</code>. Following is my <code>Dockerfile</code>. Got stuck how to go sub folder and run <code>bower install</code>. Thanks.</p>
  
  <pre><code>### STAGE 1: Build ###
  FROM node:latest as builder
  LABEL auther="PPShein"
  COPY package.json package.json
  RUN npm install
  COPY . .
  RUN gulp default
  </code></pre>