I've set up a new pipeline in AWS CodePipeline, and connected it to my GitHub account. I'm getting build errors in CodeBuild because a folder that is in my GitHub repository, static/css/, is missing (I'm using CodeBuild to do a gatsby build).
This is not a folder generated in the build process - this folder and its files exist in a clean repo. I've also checked that the branch is correct (master).
When I inspect the zip file in the SourceArtifacts folder in my S3 bucket, this folder is not there.
Any ideas why CodePipeline is not retrieving, or at least keeping, this subfolder and its contents?