Update Dockerfile migration of dir

Dockerfile

@@ -25,7 +25,10 @@ RUN mkdir -p $SENTENCE_TRANSFORMERS_HOME && \
 # Download and persist the model properly (USE snapshot_download)
 RUN python -c "from huggingface_hub import snapshot_download; \
     model_path = snapshot_download(repo_id='sentence-transformers/all-MiniLM-L6-v2', cache_dir='/app/model_cache'); \
-    print(f'Model downloaded to: {model_path}')"
+    import shutil, os; \
+    snapshot_dir = os.path.join(model_path, 'snapshots', os.listdir(os.path.join(model_path, 'snapshots'))[0]); \
+    for filename in os.listdir(snapshot_dir): \
+        shutil.move(os.path.join(snapshot_dir, filename), '/app/model_cache/')"
 
 # Ensure the model files are available at runtime (list out)
 RUN ls -l /app/model_cache && cat /app/model_cache/config.json