docker_compose_override.md

docker-compose.override.yml

Docker Compose automatically loads docker-compose.override.yml if present, allowing you to customize local configuration without modifying versioned files.

Use case: changing ports

Create docker-compose.override.yml at the project root:

services:
  postgresql:
    ports:
      - "5434:5432"  # Use port 5434 instead of 5432

Useful to avoid port conflicts with other projects or local services.