fix CMD

Dockerfile

@@ -28,4 +28,4 @@ RUN ls -l /code/output_frames
 ENV PATH="/code/venv/bin:$PATH"
 
 # Use PORT environment variable provided by Railway
-CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "${PORT}"]
+CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "${PORT}"]

main.py

@@ -30,5 +30,9 @@ app.add_middleware(
 
 app.include_router(video.router)
 
+@app.get("/")
+async def root():
+    return {"greeting": "Hello, World!", "message": "This is a service to extract the first frame of a video!"}
+
 if __name__ == "__main__":
     uvicorn.run("main:app", host=host, port=port, reload=True)

railway.json

@@ -1,4 +1,5 @@
 {
+  
     "build": {
       "dockerfile": "Dockerfile"
     },