update docker deployment and changing seed kandang name

.env.example

@@ -1,3 +1,4 @@
-# Empty uses the Vite proxy (/api → Django :8000).
-# Set a full origin only if you skip the proxy.
+# Local dev: Vite proxies /api → Django :8000
 VITE_API_BASE=/api/v1
+
+# Docker Compose env: cp docker/.env.example .env