Curated while getting started with Docker

docker login

docker run hello-world

docker build -t NAME-OF-APP

• docker run -p 4000:80 NAME-OF-APP

  visit http://localhost:4000

• docker run -p 80:80 USERNAME/REPO:TAG

  visit http://localhost/

Get container info docker ps after running the app, will list port

Can also get port info via docker port CONTAINER-ID or docker port CONTAINER-NAME

docker run -d -p 4000:80 NAME-OF-APP

docker stop CONTAINER-ID

docker images

docker push USERNAME/REPO:TAG

docker run -p 4000:80 USERNAME/REPO:TAG

docker tag image USERNAME/REPO:TAG

// Copy new/updated docker-compose.yml file before deploying the new/updated version

• docker-machine scp docker-compose.yml VM-NAME:~

• docker stack deploy -c docker-compose.yml NAME-OF-APP

  Run docker swarm init once before if it has not been done yet

docker stack ps NAME-OF-APP

docker stack rm NAME-OF-APP

docker swarm leave --force

docker-machine create --driver virtualbox VM-NAME

docker-machine env VM-NAME

Only a swarm manager can execute Docker commands

docker-machine ssh VM-NAME "docker swarm init"

• docker-machine ssh is a command that enables sending commands to a specified VM
• If error with need to use --advertise-addr, then docker-machine ssh VM-NAME "docker swarm init --advertise-addr VM-IP:2377"

docker-machine ls to find IP for appropriate VM-IP;

Specifying port has to be 2377

Add worker to a swarm

Workers are for capacity and are not able to execute Docker commands

docker-machine ssh VM-NAME "docker swarm join --token <token>"

make sure specifying port is 2377

docker-machine ssh VM-NAME THEN in the machine, then run 'docker node ls' THEN to exit with command exit

Alternatively, docker-machine ssh VM-NAME "docker node ls"

docker-machine ssh VM-NAME "docker swarm leave"

docker-machine scp docker-compose.yml VM-NAME:~

docker-machine ssh VM-NAME "docker stack deploy -c docker-compose.yml NAME-OF-APP"

Check via docker-machine ssh VM-NAME "docker stack ps NAME-OF-APP"

docker-machine ls

docker-machine ssh VM-NAME "docker stack rm NAME-OF-APP"

Can choose to keep the swarm or remove it

Run docker-machine ls to get IP address of one of nodes

In this version, visualizer runs on port 8080, so visit either IP address at this port.