Docker Tutorial
Docker Installation
How to use Docker
Docker Instance
Docker Container Lifecycle Command
Docker Container Operation Command
Docker Container rootfs Command
Docker Mirror Repository Command
Docker Local Image Management Command
Docker info|version Command
Docker is an open-source platform designed to automate the deployment, scaling, and management of applications by creating lightweight, portable containers. Docker simplifies the process of application development, testing, and deployment by providing a consistent environment across various stages. In this tutorial, we'll cover the fundamentals of Docker architecture.
Docker Daemon: The Docker daemon (dockerd
) is a background process that listens to Docker API requests and manages Docker objects, such as images, containers, networks, and volumes. The daemon can also communicate with other Docker daemons to manage Docker services.
Docker Client: The Docker client (docker
) is the primary means for users to interact with Docker. The client sends commands to the Docker daemon, which then executes them. The Docker client can communicate with more than one Docker daemon.
Docker Registries: Docker registries store Docker images. Docker Hub is a public registry that anyone can use, while private registries can be created for internal use. Docker can also be configured to use multiple registries.
Docker Images: Docker images are read-only templates used to create containers. Images are created from Dockerfiles, which contain a set of instructions for building an image. Images can be pulled from a registry or built locally.
Docker Containers: Docker containers are lightweight, portable units that can run software in isolation from other containers. Containers are created from Docker images and can be run, stopped, or deleted.
Understanding Docker architecture: Docker follows a client-server architecture. The Docker client communicates with the Docker daemon, which is responsible for managing Docker objects. When you run a command like docker run
, the client sends the command to the daemon, which then creates and runs a container.
Installing Docker: To get started with Docker, you'll need to install it on your system. Visit the official Docker website for installation instructions for your platform.
Working with Docker: Once Docker is installed, you can start working with Docker containers. The following commands will help you get started:
docker pull <image>
: Pull an image from a Docker registry (e.g., Docker Hub).docker build -t <image_name> <path_to_dockerfile>
: Build an image from a Dockerfile.docker images
: List all the images on your system.docker run -d -p <host_port>:<container_port> --name <container_name> <image>
: Run a new container from an image.docker ps
: List running containers.docker stop <container>
: Stop a running container.docker rm <container>
: Remove a stopped container.docker rmi <image>
: Remove an image.This tutorial provides a high-level overview of Docker architecture and its key components. As you explore Docker further, you'll learn more about advanced features such as Docker Compose, Docker Swarm, and container orchestration. Docker can greatly streamline the development and deployment process, making it an essential tool for modern software development.