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docker compose up → entire stack starts in isolation.

db: image: postgres:15 environment: POSTGRES_USER: dev POSTGRES_PASSWORD: devpass POSTGRES_DB: myapp volumes: - db_data:/var/lib/postgresql/data healthcheck: test: ["CMD-SHELL", "pg_isready -U dev"] interval: 10s a developer's essential guide to docker compose pdf

Use a wait-script or dockerize inside your app. 8. Development vs. Production Compose Files Approach 1: Override file docker compose up → entire stack starts in isolation