The initial execution of 'sam sync' demands user interaction

[gusth-sa]

When configuring a new stack, to start a new sync process is necessary to confirm the following prompt

The SAM CLI will use the AWS Lambda, Amazon API Gateway, and AWS StepFunctions APIs to upload your code without 
performing a CloudFormation deployment. This will cause drift in your CloudFormation stack. 
**The sync command should only be used against a development stack**.

Confirm that you are synchronizing a development stack.

Enter Y to proceed with the command, or enter N to cancel:
 [Y/n]: 

After proceeding with 'Y', an update is made to ~/.aws-sam/metadata.json, appending a new value to the accelerateOptInStacks array, and subsequent sync operations will not prompt this action again.

I tried to identify this value but seems to be an MD5 that I could not relate to any stack information.

Though understandable for safety, there's a need for an option in 'sam sync' to designate development stacks and skip prompts, especially in automated setups.

[ryanhitt40]

Yeah agree it should have an option to skip this. However if you need to automate it in jenkins/whatever just echo the Y and pipe it to the sync command