fix(Docker): Network should be external with docker compose 2.20.0

vikunja/docker-compose.traefik.yml

@@ -3,6 +3,7 @@ version: "3.8"
 networks:
   default:
     name: ${TRAEFIK_NETWORK_NAME:-traefik}
+    external: true
 
 # https://vikunja.io/docs/full-docker-example/#example-with-traefik-2