vars:
  # Drives the `name_template` in atmos.yaml, so this stack is `dev`.
  stage: dev

# The `dev` stack fulfills ALL three declared services — including `database`.
# The same composition adapts per stack with no override syntax: `local` provides
# 2 of 3 services, `dev` provides 3 of 3.
components:
  container:
    frontend:
      composition: storefront
      image: nginx:alpine

    api:
      composition: storefront
      image: nginx:alpine

    database:
      composition: storefront
      image: postgres:16-alpine