Docker

Docs

• Docker Docs

Install

1. sudo apt update
2. sudo apt install ca-certificates
3. Add Docker's official GPG key:
   1. Set permissions to the /etc/apt/keyrings directory: sudo install -m 0755 -d /etc/apt/keyrings
   2. Load the Docker GPG key: sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc
   3. Update the loaded key permissions: sudo chmod a+r /etc/apt/keyrings/docker.asc
4. Add Docker repository to the apt sources:

echo \
  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/ubuntu \
  $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | \
  sudo tee /etc/apt/sources.list.d/docker.list > /dev/null     

1. sudo apt update
2. Install the latest Docker version: sudo apt install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
3. Verify the installation: sudo docker run hello-world

CLI

Images

• Download an image from Docker registry: sudo docker pull <IMAGE_NAME>
• Check the downloaded images: sudo docker images
• Remove an image: docker rmi IMAGE <REPOSITORY:TAG>
• Remove all unused images: sudo docker prune -a
• Forcefully Remove all images: docker rmi -f $(docker images -q)

Containers

• Statistics for running containers: sudo docker stats
• List of all containers: sudo docker ps -a
• Restart container: sudo docker restart <CONTAINER_ID>
• Access container: sudo docker exec -ti <CONTAINER_ID> /bin/bash
• Stop container: sudo docker stop <CONTAINER_ID>
• Remove container: sudo docker rm <CONTAINER_ID>