Simplify Oracle setup directory structure

Moved Oracle setup scripts to a more intuitive directory (`docker/setup`) and updated corresponding volume mappings in `docker-compose.yml`. Adjusted `.gitignore` to exclude the new `docker/data/` directory. This change improves organization and clarity for Oracle-related files.

.gitignore

@@ -76,3 +76,5 @@ unlist.sh
 
 # build artifacts
 /artifacts
+
+/docker/data/

docker/docker-compose.yml

@@ -34,8 +34,8 @@
         - "1521:1521"
         - "5500:5500"
       volumes:
-        - ./oracle-data-free1:/opt/oracle/oradata
-        - ./oracle-setup:/opt/oracle/scripts/setup
+        - ./data/oracle-data:/opt/oracle/oradata
+        - ./setup/oracle-setup:/opt/oracle/scripts/setup
   
   mongodb:
     image: mongo:latest