This script can be used to hold up a deploy pipeline after a CloudFormation deploy has taken place. This will handle both UPDATE and CREATE events, currently the AWS CLI doesn't support this.

wait-for-cloudformation.sh

#!/bin/bash

STACK_NAME=my-stack-name
UPDATING=1

while [ "$UPDATING" -ne 0 ]
do
    stack_status=$(aws cloudformation describe-stacks --stack-name ${STACK_NAME} | jq -r --arg STACK "$STACK_NAME" '[.Stacks[]|select(.StackName==$STACK)][0].StackStatus')

    if [[ "$stack_status" == "PROCESSING_UPDATE" || "$stack_status" == "PROCESSING_CREATE" ]]; then
        echo Still processing, stack status ${stack_status}
        sleep 10
    elif [[ "$stack_status" == "UPDATE_COMPLETE" || "$stack_status" == "CREATE_COMPLETE"  ]]; then
        echo Processing completed status ${stack_status}
        exit 0
    else
        echo Processing returned failure status ${stack_status}
        exit 1
    fi
done