It finally worked!
Searching in the community threads I saw that I might have problems with the file: ~/.fly/config.yml
. I have reinstalled flyctl and downloaded the repository again. And in the end it was successfully deployed. What a silly problem.
Here is the post:
Thank you very much for all your answers @greg and your consideration. Now I just need to configure the server to be able to use SFTP/FTPS, I’ll see how I can do it. I’ll have to do some research.
Thanks again and have a nice day.
P.D.:Finally, here is the proof that it works hahaha.