# NATS 2.14.x with JetStream, Experimental tier.
#
# JetStream is mandatory: core NATS is fire-and-forget with no persistence and no acknowledgement,
# so an at-least-once destination configured against it would report success for messages that were
# never stored. The adapter's validator refuses that combination.
services:
  nats:
    image: nats:2.14-alpine
    container_name: messaging-nats
    ports:
      - "4222:4222"
      - "8222:8222"
    command:
      - "--jetstream"
      - "--store_dir=/data"
      - "--http_port=8222"
    healthcheck:
      test: ["CMD-SHELL", "wget -q -O- http://localhost:8222/healthz || exit 1"]
      interval: 5s
      timeout: 5s
      retries: 20