this post was submitted on 21 Jul 2025
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I know nothing about k8s, just started with a homelab using primarily docker in an Ubuntu LXC in proxmox and have been using the nextcloud image via docker compose on a different port by simply editing the compose to outwardly point to a different port, inside the docker container my understanding is it all still uses port 80, thereby causing no further issues with the application.
Welcome to the community then :) For rootful Docker you are correct - the inside port can be 80 and you can expose it on whatever port you want (ideally you expose it only via reverse proxy and not by port - I can recommend Caddy-Docker-Proxy for that)
I use Traefik already, but thank you! :)
Also a great choice :)
Got me curious on rootless vs root docker, there's so much.
Since rootless docker is (mostly) a security improvement, here is a interesting list of other Docker realted security tips I like to consult: https://cheatsheetseries.owasp.org/cheatsheets/Docker_Security_Cheat_Sheet.html