[Container] study goals for learning container

Learning Objectives

• Build a container image and store it in a container registry.
• Describe the features, benefits, and use cases of containers, and how they are different from virtual machines.
• Define Docker and list some of the commonly used Docker CLI commands and their functions.
• Explain the basic purpose of container registries, then describe how container registries differentiate themselves and how users interact with them.
• Compare and contrast containers and images.
• Use Docker to pull an image from the Docker Hub registry, run the image as a container, and push the image to an IBM Cloud Container Registry.
• List some of the commonly used instructions in Dockerfiles and describe how to build and tag an image using a Dockerfile.
• Describe Docker architecture components and describe containerization.
• Explain how Docker works as a container runtime.
• Describe the IBM Cloud Container Registry service.