diff --git a/docker-compose-traefik.yml b/docker-compose-traefik.yml
index 3706a5fd..88ad1243 100644
--- a/docker-compose-traefik.yml
+++ b/docker-compose-traefik.yml
@@ -1,5 +1,9 @@
 version: "3.7"
 
+x-environment: &py-environment
+  TRAEFIK_ADMIN_PORT: ${TRAEFIK_ADMIN_PORT:-"8080"}
+  TRAEFIK_PORT: ${TRAEFIK_PORT:-"80"}
+
 include:
   - path:
     - docker-compose.yml
@@ -11,8 +15,8 @@ services:
     command: --providers.docker --api.insecure=true
     env_file: .env
     ports:
-      - "$TRAEFIK_PORT:80"
-      - "$TRAEFIK_ADMIN_PORT:8080"
+      - "${TRAEFIK_PORT}:80"
+      - "${TRAEFIK_ADMIN_PORT}:8080"
     volumes:
       - /var/run/docker.sock:/var/run/docker.sock