fix: simplify and test registry setup

- Fix config.yml format
- Simplify Dockerfile with direct config copy
- Remove unnecessary volume mounts
- Tested working locally

docker-compose.yml

@@ -9,7 +9,6 @@ services:
       - "5000"
     volumes:
       - registry-data:/var/lib/registry
-      - registry-config:/etc/docker/registry
     networks:
       - registry-network
 
@@ -19,6 +18,4 @@ networks:
 
 volumes:
   registry-data:
-    driver: local
-  registry-config:
     driver: local