compose.preview.yaml

# Preview overlay: a throwaway Azure stack for testing changes before they reach
# production. Deploy with:
#
#   defang compose up -s <name> -f compose.preview.yaml
#
# It deliberately does NOT include compose.yaml wholesale. `extends` pulls in only
# the services a preview should run, which is how discord-bot is left out: it holds
# the live Discord token and a second copy would answer real users alongside
# production. Compose overlays can add and change keys but cannot delete a service,
# so selecting services here is the only way to drop one.
services:
  app:
    extends:
      file: compose.yaml
      service: app
    # Never claim the production hostname. Azure's DNS writer only touches Azure
    # zones, so it would silently skip this anyway, but a preview must not race
    # production for the certificate either. Empty string clears the inherited value.
    domainname: ""

  redis:
    extends:
      file: compose.yaml
      service: redis

models:
  # On Azure the AI Foundry deployment is named after the SERVICE, while Defang
  # wires the model ALIAS into MODEL — so they must match or every request fails
  # with DeploymentNotFound. Once pulumi-defang#536 ships (the provider then reads
  # the alias from the service's own --alias) this can become "chat-default", which
  # is portable across clouds. The alias only picks chat vs embedding, so "llm" is
  # a valid chat model either way.
  llm:
    model: llm