Issue #167: MacOS support.

Also if possible to have an answer on https://gitlab.com/florenttorregrosa-docker/apps/docker-traefik/-/blob/main/docker-compose-macos.yml#L5

conf/docker/docker-compose-macos.yml

+version: "3.7"
+
+networks:
+  default:
+    name: traefik
+    external: true