Keep existing compose deployment identity

docker-compose.yml

@@ -1,5 +1,5 @@
 services:
-  plan-b:
+  kammergut:
     build:
       context: .
       dockerfile: Dockerfile
@@ -7,7 +7,7 @@ services:
     # step would otherwise try to fetch this name from a registry and
     # fail with "pull access denied" since the image is built locally.
     # Compose builds from `build:` during `up`.
-    container_name: plan-b
+    container_name: kammergut
     restart: unless-stopped
     ports:
       - "4422:80"