Refactored almost everything

Dockerfile

@@ -8,4 +8,4 @@ RUN pip install --no-cache-dir --upgrade -r /code/requirements.txt
 
 COPY . .
 
-CMD ["uvicorn", "app:main", "--host", "0.0.0.0", "--port", "7860"]
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "7860"]

app.py

@@ -1,2 +0,0 @@
-def main():
-    print("Hello World!")

main.py

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

requirements.txt

@@ -1 +1,3 @@
+fastapi
+requests
 uvicorn