参考
https://docs.aws.amazon.com/ja_jp/codebuild/latest/userguide/how-to-create-pipeline.html
https://aws.amazon.com/jp/blogs/news/create-multiple-builds-from-the-same-source-using-different-aws-codebuild-build-specification-files/
https://docs.aws.amazon.com/ja_jp/codebuild/latest/userguide/getting-started.html