Cannot GET /

[Lay3r8]

Hello, I'm trying to do your tutorial here (thanks a lot for this contribution btw) : https://www.docker.com/blog/using-docker-desktop-and-docker-hub-together-part-1/ but when starting the service project for the first time, the only answer I can get is this :

I do not know any express js so I've tried a few things to solve that issue (eg. adding a new route to /) but it didn't worked

Thanks in advance,