Update: run rabbit as current user ID, not something odd.

docker-compose.yml

@@ -7,6 +7,7 @@ services:
       - "5672:5672"
     # persistent data needs a consistent hostname
     hostname: crunchy_carrot
+    user: "1000:1000"
     environment:
       # RABBITMQ_DEFAULT_USER: rabbit
       # RABBITMQ_DEFAULT_PASS: carrot