Docker Compose

Docker-compose reads configuration data from a YAML file.
Compose is not a production grade tool but ideal for local development & test.

Setup volumes/networks & start all containers¶

docker-compose up

Stop all containers & remove containers/volume/networks¶

docker-compose down

List all running containers¶

docker-compose ps

View processes running inside a container¶

docker-compose top

Show help for docker compose¶

docker-compose --help

Docker Compose Examples¶

template.yaml

version: '3.1' # If no version is specified then v1 is assumed.
services: #same as docker run i.e. containers
    servicename: #A friendly name that is also a DNS name (Smiliar to --name)
        image: #optional if using build
        command: # Optional, run a command
        environment: # Similar to -e in docker run
        volumes: # Optional, same as -v in docker run

    servicename2:

volumes: # Optional, same as docker volume create

network: # Optional, same as docker network create

hello-world.yaml

version: '3'
services:
    web:
        build: .
        image: web-client
        depends_on:
        - server
        ports:
        - "8080:8080"
    server:
        image: docker/helloworld
        volumes:
        - "/app" # Anonymous volume
        - "data:/data" # Named volume
        - "mydata:/data" # External volume

volumes:
    data:
    mydata:
        external: true