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Docker

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Andrei Montchik edited this page Aug 29, 2024 · 22 revisions

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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
  • Build an image: docker build <IMAGE_NAME>
  • Run an image: docker run <IMAGE_NAME>
  • Remove an image: docker rmi IMAGE <REPOSITORY:TAG>
  • 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
  • List container mounts: docker inspect -f '{{ .Mounts }}' <container id>
  • Start a container: docker start <CONTAINER_ID>
  • Container info: docker inspect <CONTAINER_ID>
    • Container status: docker inspect --format='{{.State.Status}}' <CONTAINER_ID>
    • Container mappings: docker inspect -f '{{ .Mounts }}' <CONTAINER_ID>
  • List of processes in a container: docker top <CONTAINER_ID>
  • Container logs: docker logs <CONTAINER_ID> | less
  • Restart container: sudo docker restart <CONTAINER_ID>
  • Access container: sudo docker exec -ti <CONTAINER_ID> /bin/bash
  • Stop container: sudo docker stop <CONTAINER_ID>
  • Stop all running containers: docker stop $(docker ps -aq)
  • Remove a container: sudo docker rm <CONTAINER_ID>
  • Remove all containers: docker container rm $(docker container ls -aq)

Services

  • List of services: docker-compose ps
  • Start a service: docker-compose start <SERVICE_NAME> Or docker-compose up -d <SERVICE_NAME>
    • in foreground: docker-compose up <SERVICE_NAME>
  • Service logs: docker-compose logs <SERVICE_NAME>
  • Access a service: docker-compose exec <SERVICE_NAME> bash
  • Stop a service: docker-compose stop <SERVICE_NAME>
  • Remove a service: docker-compose rm <SERVICE_NAME>

Networks

  • List of networks: docker network ls
  • Network info: docker network inspect cpp_dev

Util

  • Remove all orphan containers, images w/o containers, unused networks etc: docker system prune -a
  • Copy into container: docker cp <FILE> <CONTAINER_ID>:/<DESTINATION>/
  • Copy from container: docker cp <CONTAINER_ID>:/<FILE> /<DESTINATION>/

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