Update à symfony4 webapp on fortrabbit

  fortrabbit, git, github, symfony4, terminal

My request is very simple : I didn’t found a tuto that explain how to make an update on a symfony4 webapp with fortrabbit.

I have a git hub
I have a clone of the repository in my desktop with the new lines and the changements made on it on my desktop
I have fortrabbit account of the app.

I know that i have to make this with the ssh key but it dosen’t worked for me.

I had tried to do it for 3 hours now and I’m blocked now.
Thanks by advance.

Source: Symfony4 Questions