Using rvm and node on Ubuntu with Buildkite Agent

0-readme.md

Firstly, you'll need to install rvm as the buildkite-agent user:

sudo su buildkite-agent
curl -sSL https://get.rvm.io | bash -s stable
source /var/lib/buildkite-agent/.rvm/scripts/rvm
rvm install 2.4.0 && rvm use 2.4.0 && gem install bundler

Secondly, make rvm available to your build commands by adding the following pre-command Buildkite Agent hook:

#!/bin/bash

# Place this in /etc/buildkite-agent/hooks/pre-command
#
# Needs to be `chown buildkite-agent` and `chmod +x`

# RVM uses unbound variables and will fail without this
set +u

source /var/lib/buildkite-agent/.rvm/scripts/rvm

Finally, set up your build pipeline with the following two steps and run a build:

:ruby:

bundle install && bundle exec ruby test.rb

:node:

npm install && node test.js

Gemfile

source "https://rubygems.org"

gem "rack"

ruby "2.4.0"

package.json

{
  "dependencies": {
    "left-pad": "x"
  }
}

test.js

const leftPad = require('left-pad')

console.log(leftPad("I've loaded a node JS lib", 80))

test.rb

require "rack"

puts Rack::Utils.escape("I've loaded a gem")