I used to run bare metal monolith container host and it worked pretty well but eventually network configurations started tripping over each other and causing real issues (complicated by me running rootless Podman and wanting to run K3s cluster etc). I wanted to run Proxmox native containers but it turns out they run full root therefore breakout in one container means full host access, so now I run VMs as container hosts.
I picked up programming using “C for Dummies” book at age 13 and absolutely fell in love with developing/tinkering. My school didn’t offer any IT lessons (yes I am old) so I couldn’t wait until I got to a college that offered CS classes. Once I started these classes, I started absolutely hating development, to the point I dropped the course six months in and ferverently avoided anything IT related for the next decade. Eventually I found my way back to it via homelabbing for my own projects through organic need.
The point of my long winded anecdote: a formal education may actually hinder your IT learning more than it helps. The best teacher I found was in fact necessity or passion. Formal education will also teach you next to nothing about skills needed for selfhosting.
In addition to configuring
x-forwaded-forin NPM as suggested by others, you will also need to add192.168.65.0/24under Dashboard > Advanced > Networking > Known Proxies