build: serve openapi.json under /api endpoint

Author: simoneguzzi

main.py

@@ -14,7 +14,9 @@
 OPENAI_THREAD_ID = os.getenv("OPENAI_THREAD_ID")
 OPENAI_ASSISTANT_ID = os.getenv("OPENAI_ASSISTANT_ID")
 
-app = FastAPI(docs_url="/api/docs/", redoc_url="/api/redoc/")
+app = FastAPI(
+    docs_url="/api/docs/", redoc_url="/api/redoc/", openapi_url="/api/openapi.json"
+)
 
 app.add_middleware(
     CORSMiddleware,