Makes sense. Do you know any good ressources on docker that I could read/watch ? And how complicated is it to do docker to cloudflare to mask the ip address ? Is it pretty straightforward ?

Look for 1) Bret Fisher 2)

Docker Documentation

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Docker Documentation is the official Docker library of resources, manuals, and guides to help you containerize applications.

3) look for popular repos on Github for Dockerfile and docker-compose.yml examples

Look for cloudflare tunnel. It basically adds an extra container to your stack that is on the same vlan as the other one, but connected to cloudflare. In cloudflare admin wgui you specify what port and container name to bridge to. This sounds like a fun project to learn docker.