CI: Create and push docker images

[Zomzog]

Hi,

First thanks for your application, it helps me a lot!

I create this PR because I deploy it to a local Kubernetes server so I need a docker image of this. I've created a distroless version of the docker image because it's more secure and smaller (from ~300M to ~80Mb).

This PR will require an access token for the docker hub, after login-in you can create it here.

After you must add them to secret variables in the github settings.

And it should work and solve #274