update backend network

mgmt/authentik/compose.yml

@@ -13,7 +13,7 @@ services:
       - ./custom-templates:/templates
     networks:
       - mgmt
-      - db
+      - backend
     labels:
       - traefik.enable=true
       - traefik.http.routers.$SUBDOMAIN.rule=Host(`${SUBDOMAIN}.${DOMAIN_NAME}`)
@@ -55,7 +55,7 @@ services:
       - DB_PASS
     user: root
     networks:
-      - db
+      - backend
     volumes:
       # - /var/run/docker.sock:/var/run/docker.sock # Optional, only if using external outposts
       - ./media:/media
@@ -64,7 +64,7 @@ services:
 networks:
   mgmt:
     external: true
-  db:
+  backend:
     external: true
 secrets:
   SECRET_KEY: