I’m learning Docker, NGINX and Letsencrypt working on a website, trtying to do a DNS challenge:

officinecartografiche.net

While searching the internet I stumbled across this DO toolsnginxconfig.io

That seems to config all the best parameters for a Docker website on DO.

What I don’t get are the needed steps to get the all thing running :
1 Should I install NGINX docker, Letsencrypt docker and certbot docker and THE copy the files from nginxconfig.io on the given location ?
2 What are the DNS parameters I should set on DO and on OVH (where my domain is registered) ?

Thank you for contributinG to my learning curve