NestJS + Github Actions + AWS + Docker 에러

하는법
1. https://javascript.plainenglish.io/dockerizing-a-nestjs-nodejs-app-d440762d98a4
2. https://javascript.plainenglish.io/ci-cd-pipeline-for-nestjs-app-using-github-actions-and-aws-e5c6cba6ce70

링크를 들어가면 어디서 에러가 났는지 확인할 수 있다.
내 경우는 IAM 권한 문제때문에 발생한 것이였다.

service unexpected-helper failed to launch a task with (error ECS was unable to assume the role 'arn:aws:iam::숫자:role/' that was provided for this task. Please verify that the role being passed has the proper trust relationship and permissions and that your IAM user has permissions to pass this role.).