Fix whisper import and Dockerfile configuration

utils.py

@@ -1,4 +1,4 @@
-import openai_whisper as whisper  # Use the correct import for openai-whisper
+import whisper  # ✅ Use the correct package name
 from transformers import MarianMTModel, MarianTokenizer, AutoTokenizer, AutoModelForSeq2SeqLM
 import os