modify image container adding main for testing

Dockerfile

@@ -12,5 +12,4 @@ COPY --chown=user requirements.txt .
 RUN pip install  --user -r requirements.txt
 
 COPY --chown=user . .
-
-CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860"]
+CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860"]

main.py

@@ -0,0 +1,7 @@
+from fastapi import FastAPI
+
+app = FastAPI()
+
+@app.get("/")
+def read_root():
+    return {"Hello": "World!"}