Docker Compose Cheat sheet

Here’s a quick compose cheatsheet you can refer to:

Basic example

version: '2' services: web: build: . # build from Dockerfile context: ./Path dockerfile: Dockerfile ports: - "5000:5000" volumes: - .:/code redis: image: redis 

Commands

docker-compose start docker-compose stop docker-compose pause docker-compose unpause docker-compose ps docker-compose up docker-compose down 

Reference

Building

web: # build from Dockerfile build: . # build from custom Dockerfile build: context: ./dir dockerfile: Dockerfile.dev # build from image image: ubuntu image: ubuntu:14.04 image: tutum/influxdb image: example-registry:4000/postgresql image: a4bc65fd 

Ports

ports: - "3000" - "8000:80" # guest:host # expose ports to linked services (not to host) expose: ["3000"] ## Commands 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] 

Environment variables

# environment vars environment: RACK_ENV: development environment: - RACK_ENV=development # environment vars from file env_file: .env env_file: [.env, .development.env] 

Dependencies

# 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 

Other options

# make this service extend another extends: file: common.yml # optional service: webapp volumes: - /var/lib/mysql - ./_data:/var/lib/mysql 

Advanced features

Labels

services: web: labels: com.example.description: "Accounting web app 

DNS servers

services: web: dns: 8.8.8.8 dns: - 8.8.8.8 - 8.8.4.4 

Devices

services: web: devices: - "/dev/ttyUSB0:/dev/ttyUSB0" 

External links

services: web: external_links: - redis_1 - project_db_1:mysql 

Hosts

services: web: extra_hosts: - "somehost:192.168.1.100" 

Contributors

Tathagata Sarkar