How we set up continuous integration on Jenkins

1. At https://cloud-images.ubuntu.com/locator/ec2/, pick the latest hvm:ebs-ssd instance for the region (us-east-1 in our case)
   1. Choose the dedicated CI VPC, with IAM role Jenkins-CI.
   2. Tag it Environment: ci
   3. Give it the jenkins-ci security group (inbound port 443)
   4. Launch it!
2. Name it Jenkins-CI
3. Give yourself temporary SSH access (via the security group) and install Jenkins:
   1. sudo apt-get update && sudo apt-get dist-upgrade
   2. Follow the instructions at https://pkg.jenkins.io/debian-stable/ to install:

      wget -q -O - https://pkg.jenkins.io/debian-stable/jenkins.io.key | sudo apt-key add -
      sudo apt-add-repository 'deb https://pkg.jenkins.io/debian-stable binary/'
      sudo apt-get update
      sudo apt-get install jenkins