fix

main.py

@@ -1,4 +1,5 @@
 from fastapi import FastAPI
+import uvicorn
 
 app = FastAPI()
 
@@ -6,3 +7,5 @@ app = FastAPI()
 def read_root():
     return {"Hello": "World!"}
 
+if __name__ == "__main__":
+    uvicorn.run(app, host="0.0.0.0", port=8000)