Replace redis:7-alpine with valkey/valkey:8-alpine across the management
compose stack. Valkey is the Linux Foundation-backed BSD-3-Clause fork,
maintaining full API compatibility with Redis 7.x.
Changes:
- Swap Docker image to valkey/valkey:8-alpine
- Rename service and container (redis -> valkey, nomad_redis -> nomad_valkey)
- Update health check to use valkey-cli
- Update REDIS_HOST env var to point to new service name
- Update sidecar-updater service list
AdonisJS reads REDIS_HOST from env, so zero application code changes
are needed. BullMQ job queues work identically on Valkey.
Closes#276
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
