What is the purpose of multi-stage builds?

Which command interactively monitors all container activity in the Docker engine?

You created a new service named 'http' and discover it is not registering as healthy. Will this command enable you to view the list of historical tasks for this service?
Solution: 'docker service ps http'

Which of the following commands is used to display system-wide Docker configuration on a host?

Is this a type of Linux kernel namespace that provides container isolation?
Solution: Authentication