Docker Compose

configure relationships between containers

Save our docker container run settings in easy-to-read file

Create one-liner developer environment startups

YAML-formatted file that describes our solution options for:

containers

networks

volumes

A CLI tool docker-compose used for local dev/test automation with those YAML filesdocker-compose.yaml example

version: '2'
#same as 
#docker run -p 80:4000 -v $(pwd):/site bretfisher/jekyll-serve

services:
  jekyll:
    image: bretfisher/jekyll-serve
    volumes:
      - .:/site
    ports:
      - '80:4000'

. current working directory
For more exmaples: https://docs.docker.com/
docker-compose CLI

CLI tool comes with Docker for Windows/Mac, but separate. download for Linux

Not a production-grade tool but idead for local development and test

docker-compose + up setup volumes/networks and start all containersdown stop all containeres and remove containers/volumes/networks:ro used in volumes. read-only. (cannot change within container)
if all your projects had a Dockerfile and docker-compose.yml then new developer onboarding would be:

git clone github.com/some/software

docker-compose-upBoom! Done!