Docker stands at the forefront of containerization technology. It allows developers to package applications and their dependencies into containers. A container is an isolated environment, akin to a lightweight, standalone, and secure package of software that includes everything needed to run it: code, runtime, system tools, system libraries, and settings.
A Dockerfile is a text document containing all the commands a user could call on the command line to assemble a Docker image. It automates the process of creating Docker images. A Dockerfile defines what goes on in the environment inside your container. Docker Compose is a tool for defining and running multi-container Docker applications.
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