How can I install a specific node.js version on a PHP container on Travis CI?

Question

For a Laravel project I use Travis Ci with the language option as PHP. Besides PHP I want to do some Node JS testing. The default installed version of Node JS does not meet

Answer 1

In search for an answer to the same question I ended up here, and there, and this helped me:

language: php

php:
  - 7.0
  - 7.1

before_install:
  - nvm install 6.10

install
  - npm install

Note: Installing this in the before_install section as I am installing the actual packages in the install section.