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Docker

Docker is a platform for developing, shipping, and running applications in containers.

Containers are lightweight, portable, and self-sufficient units that can package an application and its dependencies, including libraries and configuration files, into a single, consistent environment.

This allows developers to create, deploy, and manage applications more efficiently, regardless of the underlying infrastructure.

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Let's get down to business

shall we?

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Check your OS (optional)

This step is just to make sure you have Deepin Linux installed.

lsb_release -a
hostnamectl
cat /etc/os-release
uname -a

Output

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Update packages info

sudo apt-get update

Running sudo apt-get update is an important step before installing or upgrading packages on your system because it ensures that you have the most up-to-date information about available packages.

Without updating the package index, you might not see the latest versions of software or be able to install new packages that have been added to the repositories since the last update.

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Install dependencies

sudo apt install apt-transport-https ca-certificates gnupg2 curl software-properties-common -y

Output

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Download Docker GPG (GNU Privacy Guard) key

sudo curl -fsSL https://download.docker.com/linux/debian/gpg | sudo apt-key add -

Output

Curl is a command-line tool for transferring data with URLs. In this context, it is used to fetch data from the specified URL.

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Check Docker GPG key

sudo apt-key fingerprint 0EBFCD88

Output

0EBFCD88 is the key ID or key fingerprint of the GPG key for which you want to retrieve information. In this case, 0EBFCD88 is typically the GPG key associated with the Docker repository.

The sudo apt-key fingerprint command is used to display the fingerprint of a GPG key that has been added to the APT (Advanced Package Tool) keyring on a Debian-based Linux system. The fingerprint is a unique identifier for a GPG key, and it's used to verify the authenticity of the key.

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Add a new entry to the repository

printf 'deb [arch=amd64] https://download.docker.com/linux/debian buster stable\n'| sudo tee /etc/apt/sources.list.d/docker-ce.list

Output

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Update package info

sudo apt-get update

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Install Docker

sudo apt-get install docker-ce docker-ce-cli containerd.io

Output

docker-ce is the package name for Docker CE (Community Edition), which is the version of Docker designed for community use and development environments.

Docker CE Command Line Interface (CLI) is available through the package docker-ce-cli. It provides the command-line tools for working with Docker containers and images.

containerd.io is the package name for containerd, which is an essential component of the Docker runtime that manages containers and provides a basic infrastructure for container execution.

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Check installation

docker --version
which docker
docker --help

Output

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Check status

sudo systemctl status docker

Output

1. The command used to manage and control system services on Linux systems that use systemd as their init system is systemctl.

   systemd is a system and service manager commonly used in modern Linux distributions.

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Configure Docker hello-world

sudo docker pull hello-world

Output

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Run Docker hello-world

sudo docker run hello-world

Output

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Done

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Celebrate

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Let's become friends

• Github

• LinkedIn

• Hashnode

• Youtube

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Final thoughts

Thank you for reading this article.

If you have any questions, thoughts, suggestions, or corrections, please share them with us.

We appreciate your feedback and look forward to hearing from you.

Feel free to suggest topics for future blog articles. Until next time!

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