# docker workshop

based on xd

# hello world

docker run hello-world
docker ps -a
docker pull
docker run --name <name> image

docker rm <name>

docker run -d --name app -p 3000:3000 gvilarino/docker-testing

# connect containers

docker network create app-network

docker network ls

docker network connect app-network <db>
docker network connect app-network <app>

# compose

use https://github.com/gvilarino/docker-testing

docker-compose.yml

version: '2'

services:
  app:
    build: gvilarino/docker-testing
    environment:
      MONGO_URL: "mongodb://db/test"
    depends_on:
      - db
    ports:
      - "3000:3000"

  db:
    image: mongo

# use local docker compose

change app: build: gvilarino/docker-testing to build: .

add app:

volumes:
  - .:/usr/src
  - /usr/src/node_modules

Other commands

docker-compose ps
docker-compose images
docker-compose up -d
docker-compose up -d -f

# swarm

docker-machine create -d virtualbox manager
docker-machine ssh manager
docker-machine create -d virtualbox worker1
docker-machine create -d virtualbox worker2

docker-machine ssh worker1 
  docker swarm join --token <token> <default swarm location>

docker-machine ssh worker2 
  docker swarm join --token <token> <default swarm location>

docker node ls
docker service create --name pinger --replicas 1 alpine ping docker.com
docker service scale pinger=5
docker-machine rm worker1


docker rmi $(docker ps -a -q)
docker rm $(docker ps -a -q)

# author

Denis Tsoi