diff --git a/.env b/.env
index 1558a5c..08330a2 100644
--- a/.env
+++ b/.env
@@ -1,3 +1,5 @@
 # TRAEFIK ENVIRONMENTS VARS
 
+DOMAIN=
+APP=
 ACME_EMAIL=
\ No newline at end of file
diff --git a/docker-compose.yml b/docker-compose.yml
index cb2de3c..4fa3d94 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -37,11 +37,11 @@ services:
     container_name: whoami
     labels:
       - "traefik.enable=true"
-      - "traefik.http.routers.whoami.rule=Host(`whoami.localhost`)"
+      - "traefik.http.routers.whoami.rule=Host(`whoami.${DOMAIN}`)"
       - "traefik.http.routers.whoami.entrypoints=web"
 
       # HTTPS
-      # - traefik.http.routers.whoami-ssl.rule=Host(`whoami.localhost`)
+      # - traefik.http.routers.whoami-ssl.rule=Host(`whoami.${DOMAIN}`)
       # - traefik.http.routers.whoami-ssl.entryPoints=websecure
       # - traefik.http.routers.whoami-ssl.tls=true
       # - traefik.http.routers.whoami-ssl.service=whoami
@@ -49,5 +49,23 @@ services:
     networks:
       traefik_net:
 
+# EXEMPLE APP (SUBDOMAIN)
+  app:
+    image: repository/image:tag
+    container_name: app
+    labels:
+      - "traefik.enable=true"
+      - "traefik.http.routers.app.rule=Host(`${APP}.${DOMAIN}`)"
+      - "traefik.http.routers.app.entrypoints=web"
+
+      # HTTPS
+      # - traefik.http.routers.app-ssl.rule=Host(`${APP}.${DOMAIN}`)
+      # - traefik.http.routers.app-ssl.entryPoints=websecure
+      # - traefik.http.routers.app-ssl.tls=true
+      # - traefik.http.routers.app-ssl.service=app
+      # - traefik.http.routers.app-ssl.tls.certresolver=le
+    networks:
+      traefik_net:
+
 networks:
   traefik_net:
\ No newline at end of file