User Data - add_s3_download_command missing --region so it fails to download in the ISOLATED zone through S3 VPC gateway

asset = Asset(self, "Asset", path=path.join(__dirname, "configure.sh"))
instance = ec2.Instance(self, "Instance", {})
local_path = instance.user_data.add_s3_download_command(
    bucket=asset.bucket,
    bucket_key=asset.s3_object_key
)
instance.user_data.add_execute_file_command(
    file_path=local_path,
    arguments="--verbose -y"
)
asset.grant_read(instance.role)

Above Python code generate User Data

#!/bin/bash
mkdir -p $(dirname '/tmp/assets/fa08d934445838dab921670b0d40be6d9d261063663fbc9cd7cfd7e6691d233d.zip')
aws s3 cp 's3://cdktoolkit-stagingbucket-silds9kng0ra/assets/fa08d934445838dab921670b0d40be6d9d261063663fbc9cd7cfd7e6691d233d.zip' '/tmp/assets/fa08d934445838dab921670b0d40be6d9d261063663fbc9cd7cfd7e6691d233d.zip'

Which is perfectly working in the private zone. But when deploy instance in the ISOLATED zone its fail to download through S3 VPC Gateway. Manually adding --region with aws s3 cp command, then it works.

[DharmSonariya]

@DharmSonariya my proposed PR should suffice to fix your issue.

Thank you for your time and effort.

[ghost]

Any progress ?