What is the difference between EBS and EFS

What is the difference between image and container?

Image is a template with contains the application and its libraries and binaries
Container is a process with runs with the application from the image

How to check running containers?

docker ps -a command shows the running and stopped containers

How to create a new user in linux?

useradd command is used to create a new user with default user properties

What is sudo in linux?

run the command with the privilege of root user without root password