Docker Errors and Solutions

• Required WORKDIR update - "Could not detect node name", "idealTree" errors

  Solution

  10-24-2020
  
  The v15 version of Node has recently been released and is causing issues with some of our project code.
  
  In the next lecture you may get the following error when building the Dockerfile:
  
  npm ERR! could not detect node name from path or package
  
  or
  
  npm ERR! idealTree already exists
  
  To resolve this, add a WORKDIR right after the FROM instruction:
  
  FROM node:alpine
  WORKDIR /usr/app
  
  Also, you will no longer get the error regarding the missing package.json as shown at around 7:16 in the video. 
  With Node v15 / npm v7, if you run npm install in a directory without a package.json, 
  an empty package.json is now created for you and will no longer throw this error. 
  However, a properly written package.json listing your dependencies is still required to run a Node based application.