/DockerCheatSheet

🐋 Docker Cheat Sheet 🐋

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Table of Contents

Installation

Linux

curl -sSL https://get.docker.com/ | sh

Mac

Use this link to download the dmg.

https://download.docker.com/mac/stable/Docker.dmg

Windows

Use the msi installer:

https://download.docker.com/win/stable/InstallDocker.msi

Docker Registries & Repositories

Login to a Registry

docker login

docker login localhost:8080

Logout from a Registry.

docker logout

docker logout localhost:8080

Searching an Image

docker search nginx

docker search nginx --stars=3 --no-trunc busybox

Pulling an Image

docker pull nginx

docker pull eon01/nginx localhost:5000/myadmin/nginx

Pushing an Image

docker push eon01/nginx

docker push eon01/nginx localhost:5000/myadmin/nginx

Running Containers

Create and Run a Simple Container

  • Start an ubuntu:latest image
  • Bind the port 80 from the CONTAINER to port 3000 on the HOST
  • Mount the current directory to /data on the CONTAINER
  • Note: on windows you have to change -v ${PWD}:/data to -v "C:\Data":/data
docker run --name infinite -it -p 3000:80 -v ${PWD}:/data ubuntu:latest

Creating a Container

docker create -t -i eon01/infinite --name infinite

Running a Container

docker run -it --name infinite -d eon01/infinite

Renaming a Container

docker rename infinite infinity

Removing a Container

docker rm infinite

Updating a Container

docker update --cpu-shares 512 -m 300M infinite

Starting & Stopping Containers

Starting

docker start nginx

Stopping

docker stop nginx

Restarting

docker restart nginx

Pausing

docker pause nginx

Unpausing

docker unpause nginx

Blocking a Container

docker wait nginx

Sending a SIGKILL

docker kill nginx

Sending another signal

docker kill -s HUP nginx

Connecting to an Existing Container

docker attach nginx

Getting Information about Containers

Running Containers

docker ps

docker ps -a

Container Logs

docker logs infinite

Follow Container Logs

docker logs infinite -f

Inspecting Containers

docker inspect infinite

docker inspect --format '{{ .NetworkSettings.IPAddress }}' $(docker ps -q)

Containers Events

docker events infinite

Public Ports

docker port infinite

Running Processes

docker top infinite

Container Resource Usage

docker stats infinite

Inspecting changes to files or directories on a container’s filesystem

docker diff infinite

Manipulating Images

Listing Images

docker images

Building Images

docker build .

docker build github.com/creack/docker-firefox

docker build - < Dockerfile

docker build - < context.tar.gz

docker build -t eon/infinite .

docker build -f myOtherDockerfile .

curl example.com/remote/Dockerfile | docker build -f - .

Removing an Image

docker rmi nginx

Loading a Tarred Repository from a File or the Standard Input Stream

docker load < ubuntu.tar.gz

docker load --input ubuntu.tar

Save an Image to a Tar Archive

docker save busybox > ubuntu.tar

Showing the History of an Image

docker history

Creating an Image From a Container

docker commit nginx

Tagging an Image

docker tag nginx eon01/nginx

Pushing an Image

docker push eon01/nginx

Networking

Creating Networks

docker network create -d overlay MyOverlayNetwork

docker network create -d bridge MyBridgeNetwork

docker network create -d overlay \
  --subnet=192.168.0.0/16 \
  --subnet=192.170.0.0/16 \
  --gateway=192.168.0.100 \
  --gateway=192.170.0.100 \
  --ip-range=192.168.1.0/24 \
  --aux-address="my-router=192.168.1.5" --aux-address="my-switch=192.168.1.6" \
  --aux-address="my-printer=192.170.1.5" --aux-address="my-nas=192.170.1.6" \
  MyOverlayNetwork

Removing a Network

docker network rm MyOverlayNetwork

Listing Networks

docker network ls

Getting Information About a Network

docker network inspect MyOverlayNetwork

Connecting a Running Container to a Network

docker network connect MyOverlayNetwork nginx

Connecting a Container to a Network When it Starts

docker run -it -d --network=MyOverlayNetwork nginx

Disconnecting a Container from a Network

docker network disconnect MyOverlayNetwork nginx

Cleaning Docker

Removing a Running Container

docker rm nginx

Removing a Container and its Volume

docker rm -v nginx

Removing all Exited Containers

docker rm $(docker ps -a -f status=exited -q)

Removing All Stopped Containers

docker rm `docker ps -a -q`

Removing a Docker Image

docker rmi nginx

Removing Dangling Images

docker rmi $(docker images -f dangling=true -q)

Removing all Images

docker rmi $(docker images -a -q)

Removing all untagged images

docker rmi -f $(docker images | grep "^<none>" | awk "{print $3}")

Stopping & Removing all Containers

docker stop $(docker ps -a -q) && docker rm $(docker ps -a -q)

Removing Dangling Volumes

docker volume rm $(docker volume ls -f dangling=true -q)

Removing all unused (containers, images, networks and volumes)

docker system prune -f

Clean all

docker system prune -a

Docker Swarm

Installing Docker Swarm

curl -ssl https://get.docker.com | bash

Initializing the Swarm

docker swarm init --advertise-addr 192.168.10.1

Getting a Worker to Join the Swarm

docker swarm join-token worker

Getting a Manager to Join the Swarm

docker swarm join-token manager

Listing Services

docker service ls

Listing nodes

docker node ls

Creating a Service

docker service create --name vote -p 8080:80 instavote/vote

Listing Swarm Tasks

docker service ps

Scaling a Service

docker service scale vote=3

Updating a Service

docker service update --image instavote/vote:movies vote

docker service update --force --update-parallelism 1 --update-delay 30s nginx

docker service update --update-parallelism 5--update-delay 2s --image instavote/vote:indent vote

docker service update --limit-cpu 2 nginx

docker service update --replicas=5 nginx

Notes

This work was first published in Painless Docker Course