AWS CodePipeline CloudFormation template length workaround

buildspec.yaml

version: 0.1
 
phases:
  pre_build:
    commands:
      - pip install awscli
  build:
    commands:
  post_build:
    commands:
      - aws s3 cp ./cfn-ec2.json s3://attunuri/cfn-ec2.json
      - aws cloudformation create-stack --stack-name <stack_name> --template-url https://s3.amazonaws.com/<bucket>/template.json --disable-rollback || aws cloudformation update-stack --stack-name cfn-ec2 --template-url https://s3.amazonaws.com/<bucket>/template.json

deploy.sh

# create stack cmd
exit_status=$?
if [ $exit_status -ne 0 ]
then
    cmd_output="$(# update stack 2>&1)"
    exit_status=$?
    if [ $exit_status -ne 0 ]
    then
        echo "$cmd_output" | grep -q "No updates to be performed"
        if [ $? -eq 0 ]
        then
            exit_status=0
        fi
    fi
fi
 
exit $exit_status