What is Docker Images?
- Docker image is a collection of files systems.
- A docker image is a template for docker container.
- One docker image can be used to create multiple containers
- File systems are layered over each other
- Layer 0 have the root filesystem
- Each layer in image will have 40 character length UUID generated by SHA 256 algorithm.
- All layers in a docker image is Read only.
- All layers in an image is merged to one layer while creating the container..