fix(deploy): correct docker-compose networks to match infra VM

Use postgres_default, redis_default, agiliton-api external networks.
Remove depends_on (services are in separate compose stacks).

Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>

docker-compose.yml

@@ -1,7 +1,7 @@
 services:
   agiliton-account:
     build: .
-    image: gitea.agiliton.internal/infrastructure/agiliton-account:latest
+    image: gitea.agiliton.internal/christian/agiliton-account:latest
     restart: unless-stopped
     ports:
       - "4100:4100"
@@ -10,11 +10,14 @@ services:
     labels:
       - "com.centurylinklabs.watchtower.enable=true"
     networks:
-      - agiliton-internal
-    depends_on:
-      - postgres
-      - redis
+      - postgres_default
+      - redis_default
+      - agiliton-api
 
 networks:
-  agiliton-internal:
+  postgres_default:
+    external: true
+  redis_default:
+    external: true
+  agiliton-api:
     external: true