Do you know how Docker actually works internally?

The world of containerization has revolutionized the way we develop, deploy, and scale applications. At the forefront of this transformation is Docker, a powerful platform that streamlines the container lifecycle. In this comprehensive guide, we will delve into the Docker ecosystem, unraveling the intricate web of services and components that make containerization seamless and efficient.

Docker Daemon (dockerd): The Heart of Container Management

At the core of Docker is the Docker daemon (dockerd). This background process is the linchpin of container management on the host system. It plays a pivotal role in listening for Docker API requests, overseeing Docker objects like images, containers, networks, and volumes. Essentially, dockerd is the orchestrator that ensures the smooth execution of containerized applications.

Docker CLI/API and Client: Bridging the User-Daemon Interaction

The user interface to Docker comes in two flavors: the Docker CLI (Command Line Interface) and the Docker API (Application Programming Interface). Users interact with Docker using the CLI or programmatically through the API, issuing commands and requests. The Docker client acts as the bridge, facilitating communication between…