Add Dockerfile and update API key handling for Hugging Face deployment

rag/rag_query.py

@@ -1,15 +1,19 @@
 """Module for querying the Groq API with dataset context."""
 
 from groq import Groq, APIStatusError
-from config import GROQ_API_KEY
 from rag.memory import get_dataset
 import pandas as pd
 import logging
+import os
 
 # Configure logging for this module
 logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(levelname)s - %(message)s')
 
-# Initialize Groq client with API key from config
+# Initialize Groq client with API key from environment variable
+GROQ_API_KEY = os.environ.get("GROQ_API_KEY")
+if not GROQ_API_KEY:
+    logging.error("GROQ_API_KEY environment variable not set. Please set it in Hugging Face Space Secrets.")
+    raise ValueError("GROQ_API_KEY environment variable not set.")
 client = Groq(api_key=GROQ_API_KEY)
 
 def query_dataset_with_groq(dataset_name, user_query):