chore: drop container_name from couchbase

couchbase/README.md

@@ -1,7 +1,7 @@
 # couchbase
 
 [Couchbase Server](https://www.couchbase.com), single node, defined in
-`compose.yml` with `container_name: db`.
+`compose.yml`.
 
 ## Networking
 

couchbase/compose.yml

@@ -3,7 +3,6 @@ version: '3'
 services:
   db:
     image: couchbase
-    container_name: db
     ports:
       - "8091-8097:8091-8097"
       - "9123:9123"