nself build regenerates docker-compose.yml every time it runs. Put persistent customizations in docker-compose.override.yml — Docker Compose merges it automatically on every docker compose up.

Any manual change to docker-compose.yml is overwritten the next time you run nself build. The override file is never touched by nself.

services:
  nself-ai:
    deploy:
      resources:
        limits:
          memory: 2048M
          cpus: '2.0'

services:
  postgres:
    volumes:
      - ./custom-postgresql.conf:/etc/postgresql/postgresql.conf:ro

services:
  hasura:
    environment:
      HASURA_GRAPHQL_EXPERIMENTAL_FEATURES: "streaming_subscriptions"

Place docker-compose.override.yml in the same directory as your docker-compose.yml (your project root). Docker Compose discovers and merges it automatically — no extra flags needed.

• Docker Compose merge rules
• Environment variables for resource limits