Detailed steps for docker installation

Docker is an open source containerized application that packages applications and their dependencies into a container, enabling cross-platform, portability, and self-containment. Docker is becoming more and more popular and has become an important part of cloud computing and containerization technology. In this article, we will discuss the detailed steps of Docker installation process.

1. Prerequisites

Before installing Docker, you should check whether the following requirements are met:

1. Ensure that the operating system is a 64-bit version and the kernel version is Not less than 3.10;
2. Make sure the operating system is Linux. Windows systems need to install a virtual machine manager (VirtualBox, etc.) suitable for the local environment first. Mac systems need to install the Homebrew tool first;
3. Make sure you have sudo permissions, this will allow you to install packages in your system.

2. Installation steps

After completing the prerequisites, please follow the following steps to install Docker:

Step 1: Update the software package

Before you start installing Docker, update existing packages using the following command:

sudo apt-get update
sudo apt-get upgrade

Step 2: Install necessary packages

Docker requires some necessary software packages to run properly, including apt-transport-https, ca-certificates, curl, software-properties-common. Install these packages using the following command:

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

Step 3: Configure Docker official GPG key

Download and add the Docker official GPG key using the following command:

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

Step 4: Configure Docker software source

Use the following command to add Docker software source:

sudo add-apt-repository "deb [arch=amd64] https://download.docker .com/linux/ubuntu $(lsb_release -cs) stable"

Step 5: Install Docker

Install Docker using the following command:

sudo apt-get update
sudo apt-get install docker-ce

Step 6: Start Docker

Use the following command to start the Docker service:

sudo systemctl start docker

Steps 7: Set Docker to start automatically

Use the following command to set Docker to start automatically:

sudo systemctl enable docker

Step 8: Verify whether the Docker installation is successful

Check the Docker version using the following command:

docker version

If the installation is successful, you will see the output of Docker version information.

At this point, the installation process of Docker has been completed.

Summary

This article introduces the detailed steps of Docker installation. After completing the installation by following the above steps, you can start running the application in the Docker container. One of the advantages of Docker is that it is cross-platform, so you can use it in a variety of environments. Hope this article is helpful to you.

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