simplify dockerfile

app.py

@@ -1,11 +1,11 @@
 from fastapi import FastAPI
 from transformers import pipeline
 
-app = FastAPI()
+app = FastAPI(docs_url="/")
 
 pipe = pipeline("text2text-generation", model="google/flan-t5-small")
 
-@app.get("/")
+@app.get("/generate")
 def generate(text: str):
     output = pipe(text)
     return {"output": output[0]["generated_text"]}