Targets

targets is a top-level section of the deploy config for named service sets. Each target is a non-empty list of existing services (app or deps). wos up --target <name> starts only the contents of the target plus their transitive dependencies.

targets:
  app:
    - app
  backend:
    - api
    - admin

app:
  image: node:22
  init_script:
    - bun install
  services:
    app:
      ports: [3000]
      script: [bun dev]
      dependencies: [api]
    api:
      ports: [3001]
      script: [bun dev]
      init_script:
        - cd packages/api && bun install
      dependencies: [db]
    admin:
      ports: [3002]
      script: [bun dev]
deps:
  db:
    image: postgres:13
    ports: [5432]

Start a target with:

wos up --target backend

With the config above, --target backend starts api and admin, plus api’s transitive dependency db.

Generated mode only

Targets are part of selective startup, which works only in generated mode. Using --target (or an explicit service list) in compose mode is rejected with a clear error.

Related

• Selective startup
• Dependencies