diff --git a/dev.yml b/dev.yml
new file mode 100644
index 0000000000000000000000000000000000000000..fef37c82dc157298770567748ed3c6ca2a1dcaaa
--- /dev/null
+++ b/dev.yml
@@ -0,0 +1,6 @@
+version: "3"
+
+services:
+  sympa:
+    ports:
+      - '8081:80'
diff --git a/docker-compose.yml b/docker-compose.yml
index 03551c7916661bb1272a084eef504ff4d07c27ba..4e0846335aabb2bc85a0228aa63da789e53eade5 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -29,8 +29,6 @@ services:
     networks:
       - postfix
       - default
-    ports:
-      - '8081:80'
 
   postfix:
     build: ./docker/postfix