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Docker Install Centos Docker Create Command Docker Tag Command Docker Install Apache Docker Machine Docker Rmi Command Docker Port Command Windows Docker Install Docker Search Command Docker Top Command Docker Tutorial Docker Attach Command Docker Export Command Docker Resources Docker Pause Unpause Command Docker Pull Command Docker Install Mysql Docker Install Php Docker Save Command Docker Ps Command Docker Events Command Docker Install Tomcat Docker Repository Docker Command Manual Docker Cp Command Docker History Command Docker Commit Command Docker Logs Command Docker Image Usage Docker Compose Docker Login Command Docker Info Command Docker Install Python Docker Install Node Docker Diff Command Docker Install Ubuntu Ubuntu Docker Install Docker Wait Command Docker Dockerfile Docker Container Usage Docker Images Command Docker Hello World Docker Architecture Docker Rm Command Debian Docker Install Centos Docker Install Docker Swarm Docker Container Connection Docker Inspect Command Docker Exec Command Docker Start Stop Restart Command Docker Run Command Docker Version Command Docker Build Command Docker Install Nginx Docker Install Redis Docker Import Command Docker Stats Command Docker Load Command Docker Install Mongodb Docker Mirror Acceleration Docker Push Command Macos Docker Install Docker Kill Command
❮ Docker Hello World Docker Rm Command ❯

Docker Architecture

Docker includes three fundamental concepts:

Docker utilizes a client-server (C/S) architecture model and manages and creates Docker containers using remote APIs.

Docker containers are created from Docker images.

The relationship between containers and images is similar to that between objects and classes in object-oriented programming.

Docker Object-Oriented
Container Object
Image Class
Concept Description
Docker Image A Docker image serves as a template for creating Docker containers, such as an Ubuntu system.
Docker Container A container is an independently running application or group of applications, which is the runtime entity of an image.
Docker Client The Docker client communicates with the Docker daemon via the command line or other tools using the Docker SDK (https://docs.docker.com/develop/sdk/).
Docker Host A physical or virtual machine that executes the Docker daemon and containers.
Docker Registry A Docker registry stores images, analogous to a code repository in code control. Docker Hub (https://hub.docker.com) offers a vast collection of images for use. A Docker registry can contain multiple repositories; each repository can include multiple tags; each tag corresponds to an image. Typically, a repository contains images of different versions of the same software, with tags often indicating the various versions. Images can be specified using the format <repository>:<tag>. If no tag is provided, latest is used by default.
Docker Machine Docker Machine is a command-line tool that simplifies Docker installation. It allows installation of Docker on various platforms, such as VirtualBox, Digital Ocean, and Microsoft Azure, through simple command-line instructions.
❮ Docker Hello World Docker Rm Command ❯