correcting default api key and secret manager

app.py

@@ -14,6 +14,9 @@ document_store = FAISSDocumentStore.load(
 
 classifier = pipeline("zero-shot-classification", model="facebook/bart-large-mnli")
 system_template = {"role": os.environ["role"], "content": os.environ["content"]}
+api_key_default = os.environ["api_key"]
+openai.api_key = api_key_default
+
 
 dense = EmbeddingRetriever(
     document_store=document_store,
@@ -80,10 +83,10 @@ def set_openai_api_key(text):
     """Set the api key and return chain.
     If no api_key, then None is returned.
     """
-    if text and text.startswith("sk-") and len(text) > 50:
+    if text.startswith("sk-") and len(text) > 10:
         openai.api_key = text
     else:
-        openai.api_key = os.environ["api_key"]
+        openai.api_key = api_key_default
     return f"You're all set: this is your api key: {openai.api_key}"