feat: add Ollama WebUI Just script

[p5]

Creates the just script for setting up an Ollama WebUI quadlet.
We needed to implement a custom network to bypass the recent Pasta 🍝 Podman networking limitations, where it discourages you putting stuff on the host network.

[m2Giles]

On F40, podman is now podman 5 and defaults to Pasta for it's network backend. This is a breaking change from slirp4netns.

The openwebui documentation calls out the necessary changes. I had to add the TCP port for the ollama quadlet and a host entry for it to work.

[ericcurtin]

open-webui works fine for me, but I'm still on Fedora 39 and podman version 4.9.4 though

https://github.com/ericcurtin/podman-ollama

[p5]

open-webui works fine for me, but I'm still on Fedora 39 and podman version 4.9.4 though

https://github.com/ericcurtin/podman-ollama

Yeah. I need to add some extra args when using the default network, but when using a custom network, it works fine. Will push the required args tonight.

Something about Podman 5 default network not having NAT or similar

[ericcurtin]

Upgraded just to see if I could reproduce on Fedora 40 and podman 5.

It worked, but I think you are right, it's because I set up a pod with it's own custom network