如何将EC2 Windows机器的instance-id转换为批处理变量

I have a batch file that I'd like to run on startup of an EC2 Windows AMI. The program I'd like to run from that batch file takes the instance-id of the EC2 machine as a parameter. What is the simplest way to get that Instance ID passed as an argument to that program?I have a batch file that I'd like to run on sta