Docker Cheat Sheet

Ref: http://www.docker.com/sites/default/files/Docker_CommandsCheatSheet_v08.05.2016.pdf

ORCHESTRATE

Initialize swarm mode and listen on a specific interface
docker swarm init --advertise-addr 10.1.0.2

Join an existing swarm as a manager node
docker swarm join --token <manager-token> 10.1.0.2:2377

Join an existing swarm as a worker node
docker swarm join --token <worker-token> 10.1.0.2:2377

List the nodes participating in a swarm
docker node ls

Create a service from an image exposed on a specific port and deploy 3 instances
docker service create --replicas 3 -p 80:80 --name web nginx

List the services running in a swarm
docker service ls

Scale a service
docker service scale web=5

List the tasks of a service
docker service tasks web

RUN

docker run

--rm remove container automatically after it exits
-it connect the container to terminal
--name web name the container
-p 5000:80 expose port 5000 externally and map to port 80
-v ~/dev:/code create a host mapped volume inside the container
alpine:3.4 the image from which the container is instantiated
/bin/sh the command to run inside the container

Stop a running container through SIGTERM
docker stop web

Stop a running container through SIGKILL
docker kill web

Create an overlay network and specify a subnet
docker network create --subnet 10.1.0.0/24 --gateway 10.1.0.1 -d overlay mynet

List the networks
docker network ls

List the running containers
docker ps

Delete all running and stopped containers
docker rm -f $(docker ps -aq)

Create a new bash process inside the container and connect it to the terminal
docker exec -it web bash

Print the last 100 lines of a container’s logs
docker logs --tail 100 web

BUILD

Build an image from the Dockerfile in the current directory and tag the image
docker build -t myapp:1.0 .

List all images that are locally stored with the Docker engine
docker images

Delete an image from the local image store
docker rmi alpine:3.4

SHIP

Pull an image from a registry
docker pull alpine:3.4

Retag a local image with a new image name and tag docker tag alpine:3.4 myrepo/myalpine:3.4

Log in to a registry (the Docker Hub by default) docker login my.registry.com:8000

Push an image to a registry
docker push myrepo/myalpine:3.4