Added github workflow for docker and dependabot

[itspooya]

No description provided.

[xtaci]

what's this for?

[itspooya]

I've been a fan of this project. One thing I've noticed is that there isn't an official Docker image available, making it a bit more difficult to get started.
To address this, I've created this pull request to introduce a GitHub Actions workflow that automates the building of a Docker image for each tag and release. This means that with each new version, an updated Docker image will be automatically built and hosted on GitHub Container Registry (GHCR). This should make it easier for users to get started with the project and take advantage of the latest changes.
I hope this contribution helps to make the project more accessible and user-friendly!

[itspooya]

Hi
I wanted to check status of this PR
also as a sample you can check current forked repository in my repository list to see how it would work
@xtaci

[xtaci]

sorry for the delay, I was on a vacation.

[itspooya]

Hey, because current workflow is on release and on tag, I don't know when you want to release something new, I wanted to ask you please for now consider running docker workflow manually to have the docker images created or maybe you can release
https://github.com/xtaci/kcptun/actions/workflows/docker.yml

[itspooya]

Hey, because current workflow is on release and on tag, I don't know when you want to release something new, I wanted to ask you please for now consider running docker workflow manually to have the docker images created or maybe you can release https://github.com/xtaci/kcptun/actions/workflows/docker.yml

@xtaci

[xtaci]

https://github.com/xtaci/kcptun/actions/runs/9144409885
What else should I do?

[itspooya]

https://github.com/xtaci/kcptun/actions/runs/9144409885 What else should I do?
https://docs.github.com/en/packages/learn-github-packages/connecting-a-repository-to-a-package