What is a Docker image and why it is so important?
A Docker image is a kind of a template that contains instructions for creating a Docker container. You can only read the instructions; you can't add your own instructions to this template since this a read-only template. It consists of a separate filesystem, associated libraries, and so on. Here, an image is always read-only and can run exactly the same abstracting, underlying, host differences. A Docker image can be composed of one layer on top of another. This composability of the Docker image can be compared to the analogy of a layered cake. Docker images that are used across different containers can be reused. This also helps reduce the deployment footprint of applications that use the same base images.
What is the Docker repository?
The Windows Registry is a database that stores information for the internal...