chore(docker): use .env instead of prod.env

docker-compose.yml

@@ -1,6 +1,6 @@
 services:
   postgres:
-    env_file: prod.env
+    env_file: .env
     image: postgres:16-alpine
     container_name: maleniabot_db
     environment:
@@ -21,7 +21,7 @@ services:
       retries: 5
 
   bot:
-    env_file: prod.env
+    env_file: .env
     build:
       dockerfile: Dockerfile
     container_name: maleniabot_bot