What is Docker Images and Explain in 10 bullet lines?
Collection of file systems
One copy of docker image get attached to each container.
From one image multiple containers can be created
Layered structure
Each layer is each File system
Layer 0 should be base image or Root FS
Once image is attached to container, these layers will be attached to the container as a single layer
The layers in image will be on read only format, and to have the changes the thin layer in container should be used and commit that and form a new image
For creating docker images one of the following can be used
– Layer by layer adding (using existing container)
– All layers in one go (using docker file)