docker-compose cheat sheet

docker-compose cheat sheet

#=====================================================================
docker-compose -f docker-compose.json up #use JSON instead of YAML compose file
#=====================================================================
docker-compose -f ~/hello_world/docker-compose.yml build
docker-compose -f ~/hello_world/docker-compose.yml up -d
docker-compose ps # Lists containers.
docker-compose stop
docker-compose start # Starts existing containers for a service.
docker-compose stop # Stops running containers without removing them.
docker-compose pause # Pauses running containers of a service.
docker-compose unpause # Unpauses paused containers of a service
docker-compose up # Builds, (re)creates, starts, and attaches to containers for a service
docker-compose down # Stops containers and removes containers, networks, volumes, and images created by up.
#=====================================================================
cat Dockerfile.test
cat docker-compose.test.yml
docker-compose -f ~/hello_world/docker-compose.test.yml -p ci build
docker-compose -f ~/hello_world/docker-compose.test.yml -p ci up -d
ocker-compose -p ci stop
#=====================================================================
                  Docker Compose v2	          Docker compose v3
 Multi-host	      No	                        Yes                  
 Start services	  docker-compose up -d	      docker stack deploy --compose-file=docker-compose.yml  
 Scale service	  docker-compose scale =	    docker service scale =
 Shutdown	        docker-compose down	        docker stack rm

#=====================================================================
# docker-compose.yml
version: '3'

services:
  web:
    build: .
    # build from Dockerfile
    context: ./Path
    dockerfile: Dockerfile
    ports:
     - "5000:5000"
    volumes:
     - .:/code
  redis:
    image: redis
#=====================================================================
# Builds, (re)creates, starts, and attaches to containers for a service.
docker-compose up
# Stops containers and removes containers, networks, volumes, and images created by up.
docker-compose down
#=====================================================================
web:
  # build from Dockerfile
  build: .
#=====================================================================
  # build from custom Dockerfile
  build:
    context: ./dir
    dockerfile: Dockerfile.dev
#=====================================================================
  # build from image
  image: ubuntu
#=====================================================================
ports:
    - "3000"
    - "8000:80"  # guest:host
#=====================================================================
  # expose ports to linked services (not to host)
  expose: ["3000"]
#=====================================================================
# command to execute
  command: bundle exec thin -p 3000
  command: [bundle, exec, thin, -p, 3000]
#=====================================================================
  # override the entrypoint
  entrypoint: /app/start.sh
  entrypoint: [php, -d, vendor/bin/phpunit]
#=====================================================================
  volumes:
    - /var/lib/mysql
    - ./_data:/var/lib/mysql
#=====================================================================
# join a pre-existing network
networks:
  default:
    external:
      name: frontend
#=====================================================================
# creates a custom network called `frontend`
networks:
  frontend:
#=====================================================================
  # makes the `db` service available as the hostname `database`
  # (implies depends_on)
  links:
    - db:database
    - redis
#=====================================================================
  # make sure `db` is alive before starting
  depends_on:
    - db
#=====================================================================
services:
  web:
    dns: 8.8.8.8
    dns:
      - 8.8.8.8
      - 8.8.4.4
#=====================================================================