1. Package Acquisition ====================

Download the static binary archive for Docker CE 18.06.3 compatible with x86_64 systems:

wget https://download.docker.com/linux/static/stable/x86_64/docker-18.06.3-ce.tgz

Ensure the version aligns with Kubernetes compatibility requirements — versions prior to 18.06 may lack critical features or exhibit instability in orchestrated environments.

2. Binary Deployment ==================

Extract and install binaries:

sudo tar -xzf docker-18.06.3-ce.tgz
sudo cp docker/* /usr/bin/

Define a systemd unit file at /etc/systemd/system/container-engine.service (using a distinct service name to avoid naming conflicts):

[Unit]
Description=Container Runtime Engine
Documentation=https://docs.docker.com/engine/
After=network.target
Wants=network.target

[Service]
Type=notify
ExecStart=/usr/bin/dockerd --host=fd://
ExecReload=/bin/kill -s HUP $MAINPID
LimitNOFILE=65536
LimitNPROC=65536
LimitCORE=infinity
Restart=on-failure
RestartSec=5
StartLimitBurst=3
StartLimitInterval=60
TimeoutStartSec=0
Delegate=yes
KillMode=process

[Install]
WantedBy=multi-user.target

Assign execution permissions:

sudo chmod 644 /etc/systemd/system/container-engine.service

3. Service Activation ===================

Reload configuration and launch the runtime:

sudo systemctl daemon-reload
sudo systemctl start container-engine
sudo systemctl enable container-engine

Verify operation:

sudo systemctl status container-engine
sudo docker version --format '{{.Server.Version}}'

4. Runtime Configuration ======================

Customize storage location and registry behavior by creating /etc/docker/daemon.json:

{
  "registry-mirrors": ["https://<your-unique-mirror-id>.mirror.aliyuncs.com"],
  "data-root": "/home/data/docker"
}

Before applying changes, prepare the target directroy:

sudo mkdir -p /home/data/docker

To obtain a personalized mirror URL:

• Log into the Alibaba Cloud console.
• Navigate to Container Registry → Image Acceleration.
• Copy the endpoint under Accelerator Address.

Apply the updated configuraton:

sudo systemctl restart container-engine

5. Validation Steps =================

Confirm correct initialization and path resolution:

sudo docker info | grep -E "^(Docker Root Dir|Registry Mirrors)"

The output should reflect /home/data/docker as the root directory and list the configured mirror URI.