I’m a beginner my friend this is why i’m here asking, i cant try without asking.
what i learned here that this software needs docker and i found that OVH supports that environment, and the plan fits with my budget, want i need to know now how much my website can handle with these resources. (2 vCores 3.1 GHz - 4 GB RAM, 50 GB SSD / 100 Mbps. ?
Stop investigating and start testing. As @zogstrip said, the stakes are pretty low. Most of the hosting services you’d use charge by the hour; you can set up and move to another service in under half an hour (plus DNS propagation, perhaps).
You are surely not alone with your enthusiasm for discourse and neither are you the first to wonder about these hosting questions. So, if you haven’t already done so, I suggest you search the #hosting category and you will find plenty of relevant topics. By reading those, you will get a sense for what to look out for when comparing providers (CPU frequency, for example).
Apart from that, I concur with @zogstrip’s advice above:
So if you ever conclude that you made the wrong decision, it’s really not a big deal to change provider. Besides, when it comes to scaling, virtually all providers let you scale up to a bigger plan without any migration.