Add support for Podman users to run DoChat Out-of-box

[8ar10der]

This pull request adds a new boot script (dochat_podman.sh) and a patch file (dochat_podman.patch) for Podman users to use DoChat without any modification.

Podman is a daemonless container engine that can run on Linux systems. I have tested the new script on my Ubuntu 22.04 and Arch Linux laptop, and it works well.

The patch file shows the differences between the original dochat.sh and the new dochat_podman.sh. It can also be used for the CI/CD in the future.

I hope this pull request can be merged to the main branch and benefit more Podman users. Thank you.

[CLAassistant]

All committers have signed the CLA.