Docker Guide

sudo apt update && sudo apt install -y ca-certificates curl gnupg lsb-release

curl -fsSL https://mirrors.aliyun.com/docker-ce/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/aliyun-docker.gpg

echo \
  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/aliyun-docker.gpg] https://mirrors.aliyun.com/docker-ce/linux/ubuntu \
  $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

sudo apt update
sudo apt install -y docker-ce

# Docker starts automatically on Ubuntu. For WSL, use:
sudo service docker start

sudo docker info

# Create the docker group if it doesn't exist
sudo groupadd docker

# Add your user to the group
sudo usermod -aG docker $USER

# Apply group changes without logging out
newgrp docker

# List all containers (including stopped ones)
docker ps -a 

# List all local images
docker images

# Debug the Docker daemon (useful if the service fails to start)
dockerd 

# Retag an image
docker tag <image-name-1>:<tag-1> <image-name-2>:<tag-2> 

# Remove an image
docker rmi <image-id-or-name>

# Follow container logs (Ctrl+C to exit)
docker logs -f <container-id>

# Inspect container metadata
docker inspect <container-id>

# Force remove a container
docker rm -f <container-id>

# Sync existing data to the new path
sudo rsync -aP /var/lib/docker/ /mnt/data0/docker

# Edit the configuration file
sudo nano /etc/docker/daemon.json 

# Update the data-root (ensure valid JSON syntax)
{
  "data-root": "/your/new/path"
}

# Reload and restart the service
sudo systemctl daemon-reload
sudo systemctl restart docker

# Verify the new storage location
docker info | grep "Docker Root Dir"

# Edit /etc/docker/daemon.json and add mirrors:
{
  "registry-mirrors": [
    "https://docker.m.daocloud.io",
    "https://dockerproxy.com",
    "https://docker.hlmirror.com"
  ]
}

# Apply changes
sudo systemctl daemon-reload
sudo systemctl restart docker

# Verification
docker info

# Tip: Use a specific mirror for a one-time pull:
docker pull docker.1ms.run/<image>:<tag>

# Export an image to a tarball
docker save -o my-docker-image.tar my-docker-image:tag

# Transfer and load the image on a target server
docker load -i my-docker-image.tar

nvidia-smi

# Import GPG key
curl -fsSL https://mirrors.ustc.edu.cn/libnvidia-container/gpgkey | sudo gpg --dearmor -o /usr/share/keyrings/nvidia-container-toolkit-keyring.gpg

# Add the repository (using USTC mirror)
curl -s -L https://mirrors.ustc.edu.cn/libnvidia-container/stable/deb/nvidia-container-toolkit.list | \
  sudo tee /etc/apt/sources.list.d/nvidia-container-toolkit.list

# Install the toolkit
sudo apt update
sudo apt install -y nvidia-container-toolkit

# Configure the Docker runtime
sudo nvidia-ctk runtime configure --runtime=docker

# Restart Docker
sudo systemctl restart docker

# Enable Persistence Mode to reduce nvidia-smi latency
sudo nvidia-smi -pm 1