traefik-multi-network-container-backend-resolution

When a container belongs to multiple Docker networks (e.g., mcp-global-network AND graphiti_oracle-internal), Traefik picks an arbitrary network IP to route backend traffic — which may be unreachable. Fix: add label traefik.docker.network=<reachable-network> to the container so Traefik uses the correct network IP. Without this label, containers on multiple networks will intermittently fail even when the service itself is healthy.