traefik-multi-network-504-missing-docker-network-label
When a container connects to multiple Docker networks, Traefik requires the explicit traefik.docker.network label to identify which network to route through. Without it, Traefik picks a random network and silently 504s when the target network (e.g., FalkorDB’s) is recreated or changes. The oracle-graphiti-mcp container had this label missing, causing intermittent 504s — adding the label and restarting resolved it permanently.