Switching to Root User

su

Removing Previous Docker Versions

If Docker is already installed on the system, first remove the existing version:

yum remove docker \
    docker-client \
    docker-client-latest \
    docker-common \
    docker-latest \
    docker-latest-logrotate \
    docker-logrotate \
    docker-engine

Configuring Docker Repository

First, install the yum-utils package:

yum install -y yum-utils

After successful installation, configure Docker's repository:

yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo

Installing Docker

Execute the following command to install Docker:

yum install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

Starting and Verifying Docker

Check Docker version:

docker -v

Enable Docker to start on boot:

systemctl enable docker

Start Docker service:

systemctl start docker

Verify Docker is running correctly:

docker images

Configuring Docker Mirror Accelerator (Free)

First, visit the official cloud service provider website and register an account

Access the console and navigate to the container image service

Follow the provider's documentation to configure the mirror accelerator. Execute the following commands in your Linux terminal:

1. Create Docker configuration directory:

mkdir -p /etc/docker

2. Note: The mirror address below is an example. Replace with your actual mirror URL.

tee /etc/docker/daemon. <<-'EOF'
{
  "registry-mirrors": ["https://your-mirror-url.example.com"]
}
EOF

3. Reload systemd configuration:

systemctl daemon-reload

4. Restart Docker service:

systemctl restart docker

After configuring the mirror accelerator, Docker application deployment will be significantly faster