need host_vars + trying ts container on network

matrix/additional-containers/docker-compose.yml

@@ -4,6 +4,8 @@ services:
     image: tailscale/tailscale:latest
     container_name: ts-matrix
     hostname: matrix
+    networks:
+      - traefik
     environment:
       - TS_AUTHKEY=${TAILSCALE_OAUTH_KEY}
       - TS_EXTRA_ARGS=--advertise-tags=${TAILSCALE_TAGS}
@@ -49,6 +51,4 @@ networks:
 
 volumes:
   ts-matrix-state:
-    driver: local
-  postgres-data:
     driver: local