Update app.py

/health end-point added

app.py

@@ -1,7 +1,13 @@
+import os
+#
 from fastapi import FastAPI
 
 app = FastAPI()
 
 @app.get("/")
 def greet_json():
-    return {"Hello": "World!"}
+    return {"Hello": "World!", "cpu_count": os.cpu_count()}
+
+@app.get("/health")
+def health():
+    return "ok"