Automatic multiarch builds for dockerhub and docker registry

[cruizba]

Hello @jtagcat , my intention is to not mantain this repo but to have automatic builds to update dependencies (because I don't think samba project will change too much in the future).

I've forked your repo and I am doing autobuilds on dockerhub and github actions

docker pull cruizba/samba:latest
docker pull ghcr.io/cruizba/samba:latest

Those builds are multiarch, they can be used on amd64,armv7 and arm64.

If you want to build your own images you're free to accept the pull request.

You need to set up these secrets in your repository:

• DOCKERHUB_USERNAME: You're dockerhub username
• DOCKERHUB_PASSWORD: You're dockerhub token to push images in the registry.
• GITHUB_USERNAME: Your github username to push images at ghcr.io
• GITHUB_TOKEN: Your github personal access token to push images at ghcr.io

That's it.

Best regards!

[jtagcat]

Hey, I partially merged ester (eriez master) and added some more on top. I incorporated your changes.

[cruizba]

Nice! Best Regards and happy new year :)