4th

Dockerfile

@@ -7,4 +7,4 @@ FROM python:3.8
 COPY . /code
 WORKDIR /code
 # CMD python main.py
-CMD ["python", "main.py"]
+CMD ["python", "app.py"]

app.py

@@ -0,0 +1,6 @@
+print('this is app py ')
+
+def add(a,b):
+    return a+b
+
+add(1,2)