So i have a vm hosted on my proxmox server with docker and nginx proxy manager, it can reverse proxy any container on the same network “bridge” without any problems…
However, i have other vms on proxmox “non docker” that i eant to reverse proxy to it but I couldn’t do it… I tried using (network_mode: host) and (network: external) But it doesn’t seem to work, whenever i inspect docker network it always says that npm is running on bridge network…
Tldr I need containerized npm to reverse proxy other “non docker” proxmox vms

Yes absolutely.
version: '3.8'services:npm:image: 'jc21/nginx-proxy-manager:latest'# sysctls:# net.core.somaxconn: 4096restart: unless-stoppedports:# These ports are in format :- '80:80' # Public HTTP Port- '443:443' # Public HTTPS Port- '81:81' # Admin Web Port# Add any other Stream port you want to expose- '21:21' # FTP21- '20:20' # FTP20environment:# Mysql/Maria connection parameters:DB_MYSQL_HOST: "db"DB_MYSQL_PORT: 3306DB_MYSQL_USER: "npm"DB_MYSQL_PASSWORD: "npm"DB_MYSQL_NAME: "npm"# Uncomment this if IPv6 is not enabled on your host# DISABLE_IPV6: 'true'volumes:- ./data:/data- ./letsencrypt:/etc/letsencrypt# - ./logrotate:/etc/logrotate.ddepends_on:- dbdb:image: 'jc21/mariadb-aria:latest'restart: unless-stoppedenvironment:MYSQL_ROOT_PASSWORD: 'npm'MYSQL_DATABASE: 'npm'MYSQL_USER: 'npm'MYSQL_PASSWORD: 'npm'volumes:- ./mysql:/var/lib/mysqlThis is pretty much a default NPM install on docker. When you go to the GUI and add a proxy host, just use the IP address or DNS name of the VM on proxmox.