Make creation of buckets optional

It appears if the bucket does not exist, this plugin creates it in us-east-1. Is there a command option instead to fail if the bucket does not exist? We manage bucket creation in Terraform, and don’t want this plugin creating random buckets in our AWS account.

 options: {
   bucketName: "will-create-if-it-doesnt-exist" // bad!
 }

[JoshuaWalsh]

Documentation is definitely somewhere that we have room for improvement. At the moment you can find all of the config options (and descriptions of what they do) in src/constants.ts:

https://github.com/jariz/gatsby-plugin-s3/blob/a0532ed68ead8496004cfcba16456d709ee801ad/src/constants.ts#L26-L89

[JoshuaWalsh]

Good suggestion! Currently this isn’t something we have an option for, I can see why it would be useful. In my opinion, creating a bucket if it doesn’t already exist violates Principle of Least Astonishment. I’m hoping we can remove it as the default behaviour, but that will need to wait for the 1.0 release.

In the meantime I’d suggest not granting the plugin the IAM s3:CreateBucket permission. We haven’t yet published documentation for which permissions the plugin requires, but you can find a list in #39.