Replace stored procedure calls with inline INSERT statements and
SCOPE_IDENTITY()
Add netcat for readiness check in new entrypoint.sh
Introduce dedicated SQL Server and init-db services in docker-compose
Update backend env to use external DB server (homelab.local)
and set new password
Drop the now‑unused depends_on, volume mount and default network
sections
Increment instance_id (3457 → 3463) for new system instance
