Docker Compose Advanced Techniques

Docker Compose is the standard for local development and smaller production environments.

Profiles¶

services: app: { image: myapp } pgadmin: image: dpage/pgadmin4 profiles: [‘debug’]

Docker Compose Advanced Techniques¶

Health checks¶

services: db: image: postgres:16 healthcheck: test: [‘CMD-SHELL’, ‘pg_isready -U postgres’] interval: 10s retries: 5 app: depends_on: db: { condition: service_healthy }

Resources + secrets¶

services: app: deploy: resources: limits: { cpus: ‘2.0’, memory: 1G } secrets: [db_password] secrets: db_password: file: ./secrets/db_password.txt

Multiple files¶

Base: docker-compose.yml + Override: docker-compose.override.yml¶

Prod: docker compose -f docker-compose.yml -f docker-compose.prod.yml up -d¶

Compose for All Sizes¶

Profiles, health checks, multiple files. For larger scale → Kubernetes.