fix(deploy): use IMAGE_NAME variable in remove_image instead of hardcoded name (#7907)

The `remove_image` function was using a hardcoded image name `vben-admin-pro`
instead of the `$IMAGE_NAME` variable (`vben-admin-local`), so the old local
image was never actually cleaned up before each build.

Co-authored-by: guoqiangui <guoqiangui@zhongshitech.cn>
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

scripts/deploy/build-local-docker-image.sh

@@ -13,7 +13,7 @@ function stop_and_remove_container() {
 
 function remove_image() {
     # Remove the existing image
-    docker rmi vben-admin-pro >/dev/null 2>&1
+    docker rmi ${IMAGE_NAME} >/dev/null 2>&1
 }
 
 function install_dependencies() {