What is Docker Images and Explain in 10 bullet lines?

1.Docker Image is like a template from which we can create docker containers

2.Docker images have multiple layers

3.Writable layer is only the upper layer which will be created when we are creating a container

4.Docker images get stored in public or private repositories

5.Docker images can be created either by manually or using docker file

6.The read-only layers of an image can be shared between any container started from the same image.

7.Size is the size used by writable layer. virtual size is size + size of container

8.Docker image is a collection of filesystem which contains rootfs, userfs and appfs. but it doesn’t contains bootfs.

9.using docker image inspect command we can get the details of docker image.

10. Docker images are immutable. We can’t change it.