feat(infra): standalone Postgres 18 infra compose (shared greenNetwork); remove redundant postgres from app compose; add DataCopy to solution

src/GreenHome.Api/docker-compose.yaml

@@ -33,24 +33,7 @@ services:
     networks:
       - greenNetwork
 
-  postgres:
-    image: postgres:18-alpine
-    restart: unless-stopped
-    environment:
-      POSTGRES_DB: greenhome
-      POSTGRES_USER: greenhome
-      POSTGRES_PASSWORD: greenhome
-    ports:
-      - "5432:5432"
-    volumes:
-      - pgdata:/var/lib/postgresql/data
-    networks:
-      - greenNetwork
-
 networks:
   serviceNetwork:
     name: greenNetwork
     external: true
-
-volumes:
-  pgdata: