How to download docker from the website (two methods)

Docker is a convenient container technology capable of running applications in different computer environments. If you use Docker containers, you may have noticed that downloading images from Docker hub is slow - especially within China. So, how to download Docker from the website? In this article, we will discuss two methods to speed up the downloading process of Docker images.

Method 1: Use Docker CN source

Docker CN source is an acceleration service built by Docker in cooperation with China's Alibaba Cloud. It provides a service for downloading Docker images from the Alibaba Cloud image warehouse. Using the Docker CN source can solve the problem of slow downloading of images from Docker hub.

The specific steps are as follows:

1. Install Docker

First, you need to install Docker on your computer. If it is already installed, you can skip this step.

On Linux systems, you can use the following command to install:

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

On MAC OS X, you can download the Docker desktop version from the Docker official website for installation.

2. Switch to the Docker CN source

Run the following command in the terminal to switch the Docker source to the Docker CN source:

sudo tee /etc/docker/daemon.json <<-&#39;EOF&#39;
{
  "registry-mirrors": ["https://<你的阿里云加速器地址>/"]
}
EOF

Among them, is your Alibaba Cloud accelerator address, which can be found on the Alibaba Cloud image accelerator page.

For example:

sudo tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": ["https://z9czj2bc.mirror.aliyuncs.com"]
}
EOF

3. Restart Docker

Run the following command to restart Docker:

sudo systemctl daemon-reload
sudo systemctl restart docker

Now, the Docker source has been switched to the Docker CN source, You can use the following command to test the speed of the accelerator:

docker info

In the output result, there are the following parts, indicating that the accelerator has been successfully enabled:

Registry Mirrors:
  https://z9czj2bc.mirror.aliyuncs.com/

Method 2: Use Docker official image

If you don't want to use the Docker CN image, you can download Docker from the Docker official image. This method requires some manual configuration, but can solve the problem of slow downloads from certain sites.

The specific steps are as follows:

1. Download the image

Open the Docker official image download page (https://download.docker.com/linux/static/stable/x86_64 /), select the Docker version to download, and download the corresponding tgz file.

For example, if you want to download Docker 19.03.1 version, you can use the following command:

curl -o docker.tgz https://download.docker.com/linux/static/stable/x86_64/docker-19.03.1.tgz

2. Unzip the file

Use the following command to unzip the tgz file to /usr/ In the bin/ directory:

sudo tar -xzvf docker.tgz -C /usr/bin/

3. Set PATH

Use the following command to add the /usr/bin/docker directory to the PATH variable and make it an executable file:

sudo ln -s /usr/bin/docker/docker /usr/local/bin/docker

4. Test Docker

Now that Docker has been installed and configured, you can use the following command to test whether it is running normally:

docker --version

The output should show the Docker you just installed version number.

Summary

The above are the two methods of downloading Docker from the website. Using the Docker CN source is the simplest method. It does not require manual configuration and can quickly solve the problem of slow downloading of images from Docker hub. Using official mirrors requires manual configuration, but can solve the problem of slow downloads from specific sites. No matter which method you use, I hope this article can help you and make you use Docker technology more smoothly.

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