Custom $PS1 for ElasticBeanstalk boxes - http://blog.samsandberg.com/2015/11/17/the-little-things-custom-ps1-for-elasticbeanstalk-boxes/

sample.config

files:
  "/opt/elasticbeanstalk/hooks/appdeploy/post/997_setup_ps1.sh":
    mode: "000755"
    owner: ec2-user
    group: ec2-user
    content: |
      #!/usr/bin/env bash
      # Custom bash prompt via kirsle.net/wizards/ps1.html ("Pink and Blue" theme)
      echo "Setting up PS1 ..."
      if cat /home/ec2-user/.bashrc | grep -q "PS1"
      then
        echo "Already set up PS1"
      else
        echo "" >> /home/ec2-user/.bashrc
        echo 'export PS1="\[$(tput bold)\]\[$(tput setaf 4)\][\[$(tput setaf 5)\]\u\[$(tput setaf 4)\]@\[$(tput setaf 5)\]\h \[$(tput setaf 2)\]\W\[$(tput setaf 4)\]]\\$ \[$(tput sgr0)\]"' >> /home/ec2-user/.bashrc
        echo "Set up!"
    fi