What Is A Docker Image?
Search IT Operations, Wednesday, May 15th, 2024
A Docker image is a file used to execute code in a Docker container. Docker images act as a set of instructions to build a Docker cotainer, such as a template. Docker images also act as the starting point when using Docker. An image is comparable to a snapshot in virtual machine (VM) environments.
Docker is an open source project that's used to create, run and deploy applications in containers. A Docker image contains application code, libraries, tools, dependencies and other files needed to make an application run. When a user runs an image, it can become one or many instances of a container. A Docker daemon operates in the background to oversee images, containers and related tasks. Communication between a client and the daemon is facilitated through sockets or a RESTful API.