Docker Cheat Sheet This is Docker Cheat Sheet made for all developers. Docker is a set of the platform as a service product that uses OS-level virtualization to deliver software in packages called containers. Docker is an open-source platform that can be used to build, ship, and run applications by packaging software in containers. Docker has a lot of commands and options, and it is very difficult to remember every command. This article provides a cheat sheet of the most commonly used Docker commands. $ docker images REPOSITORY TAG ID ubuntu 12.10 b750fe78269d me/myapp latest 7b2431a8d968 $ docker images -a # also show intermediate Manages images. Docker rmi docker rmi b750fe78269d Deletes images. Clean up Clean all docker system prune Cleans up dangling images, containers, volumes, and networks (ie, not associated with a container). Docker container ls docker image ls docker ps docker ps -a docker run -it -p 8080:80 ubuntu:latest -name ubuntu-machine /bin/bash docker exec -it ubuntu-machine /bin/bash This is a probably the complete set of commands, that we use on daily basis.

• Cheat Sheet Dockers
• Docker Command Line Cheat Sheet
• Cheat Sheet Docker Compose
• Docker Build Cheat Sheet
• Owasp Cheat Sheet Docker

docker daemon

Enable buildkit

Add to /etc/docker/daemon.json:

docker-compose

Devices

Labels

External Network

Dockerfile

Docker Stop Signal

imagemagick

vim

path update

download & extract tar.gz

gpg dirmgr explained

purge

list what exposed ports do

cassandra

gosu

debian

copy with proper permissions

su-exec

setgid

npm

gosu

Cheat Sheet Dockers

tini

node

redis

docker

google cloud sdk

kubectl

pip

locale

tomcat

https://github.com/Unidata/tomcat-docker/blob/master/Dockerfile

gosu tomcat

Secure repository setup

create application folder structure

Download and clean up in one layer

Package Manager tricks

Metadata

Make sure to add ARG statements as late as possible to not invalidate the layer cache needlessly.Each ARG will be prepended to all subsequent RUN statements, i.e. building an image with the following Dockerfile docker --pull --tag foo:latest --build-arg GIT_COMMIT=46e24af6 --build-arg USERNAME=flask .

Docker Command Line Cheat Sheet

Effectively results in the following calls:

Since the git commit hash will typically change with each build the build will not make good use of Docker’s layer cache

Python

Golang

Docker swarm cheat sheet. List of all commands to create, run, manage container cluster environment, Docker Swarm!

Docker swarm is a cluster environment for Docker containers. Swarm is created with a number of machines running docker daemons. Collectively they are managed by one master node to run clustered environment for containers!

In this article, we are listing out all the currently available docker swarm commands in a very short overview. This is a cheat sheet you can glance through to brush or your swarm knowledge or quick reference for any swarm management command. We are covering most used or useful switches with the below commands. There are more switches available for each command and you can get them with --help

Read all docker or containerization related articles here from KernelTalk’s archives.

Docker swarm commands for swarm management

Cheat Sheet Docker Compose

Drivers cambridge silicon radio. This set of command is used mainly to start, manage the swarm cluster as a whole. For node management, within the cluster, we have a different set of commands following this section.

Docker Build Cheat Sheet

• docker swarm init : Initiate swam cluster
  • –advertise-addr: Advertised address on which swarm lives
  • –autolock: Locks manager and display key which will be needed to unlock stopped manager
  • –force-new-cluster: Create a new cluster from backup and dont attempt to connect to old known nodes
• docker swarm join-token: Lists join security token to join another node in swarm as worker or manager
  • –quite: Only display token. By default, it displays complete command to be used along with the token.
  • –rotate: Rotate (change) token for security reasons.
• docker swarm join: Join already running swarm as a worker or manager
  • –token: Security token to join the swarm
  • –availability: Mark node’s status as active/drain/pause after joining
• docker swarm leave: Leave swarm. To be run from the node itself
  • -f: Leave forcefully ignoring all warnings.
• docker swarm unlock: Unlocks swarm by providing key after manager restarts
• docker swarm unlock-key: Display swarm unlock key
  • -q: Only display token.
  • –rotate: Rotate (change) token for security reasons.
• docker swarm update: Updates swarm configurations
  • –autolock: true/false. Turns on or off locking if not done while initiating.

Docker swarm node commands for swarm node management

Node is a server participating in Docker swarm. A node can either be a worker or manager in the swarm. The manager node has the ability to manage swarm nodes and services along with serving workloads. Worker nodes can only serve workloads.

• docker node ls : Lists nodes in the swarm
  • -q : Only display node Ids
  • –format : Format output using GO format
  • –filter : Apply filters to output
• docker node ps : Display tasks running on nodes
  • Above all switches applies here too.
• docker node promote : Promote node to a manager role
• docker node demote : Demote node from manager to worker role
• docker node rm : Remove node from the swarm. Run from the manager node.
  • -f : Force remove
• docker node inspect : Detailed information about the node
  • –format : Format output using GO format
  • –pretty : Print in a human-readable friendly format
• docker node update : Update node configs
  • –role : worker/manager. Update node role
  • –availability : active/pause/drain. Set node state.

Docker swarm service commands for swarm service management

Docker service is used to create and spawn workloads to swarm nodes.

Owasp Cheat Sheet Docker

• docker service create : Start new service in Docker swarm
  • Switches of docker container run command like -i (interactive), -t (pseud terminal), -d (detached), -p (publish port) etc supported here.
• docker service ls : List services
  • –filter, –format and -q (quiet) switches which we saw above are supported with this command.
• docker service ps : Lists tasks of services
  • –filter, –format and -q (quiet) switches which we saw above are supported with this command.
• docker service logs : Display logs of service or tasks
• docker service rm : Remove service
  • -f : Force remove
• docker service update : Update service config
  • Most of the parameters defined in service create command can be updated here.
• docker service rollback : Revert back changes done in service config.
• docker service scale : Scale one or more replicated services.
  • servicename=number format
• docker service inspect : Detailed information about service.