docker-syntax-compose-services

Quick Reference

Service Definition Structure

services:
  service-name:
    image: registry/image:tag        # Container image
    build: ./path                    # Build from Dockerfile
    command: ["executable", "arg"]   # Override CMD
    entrypoint: ["executable"]       # Override ENTRYPOINT
    ports:                           # Port mappings
      - "8080:80"
    environment:                     # Environment variables
      KEY: value
    volumes:                         # Data mounts
      - data:/app/data