Cleanup

1. Remove container image from Amazon ECR Registry:

   docker system prune --all
   

2. Remove Docker Node.JS Dockerfile & Source

   rm -rf /home/ec2-user/environment/hello-world-node-vulnerable
   rm -rf /home/ec2-user/environment/hello-world-node-vulnerable.zip
   

3. Remove Amazon ECR Registry

   aws ecr delete-repository --repository-name <repo_name> --force