UserData: !Base64
  Fn::Sub: |
    #!/bin/bash -xe
    echo "WaitHandle '${WaitHandle}'"
    /bin/echo '%password%' | /bin/passwd cloud_user --stdin
    yum update -y
    yum install python3 -y
    su - cloud_user -c 'aws configure set region us-east-1'
    su - cloud_user -c 'python3 -m pip install boto3'
    /opt/aws/bin/cfn-signal -e $? -r "UserData script complete" '${WaitHandle}'