Deploy image to dockerhub

[Wabri]

Issues or necessity of a feature
We have a docker hub user https://hub.docker.com/u/schroedingerhat now we can setup the pipeline to deploy the image.

Step to reproduce the bug / needs of a new feature
https://docs.docker.com/docker-hub/quickstart/

[TheJoin95]

I can take it

[TheJoin95]

https://hub.docker.com/r/schroedingerhat/y2s

I feel that won't work as we're not getting any custom input so the file where we have the youtube video ID is not changing.
@matevskial maybe we should have something in input or change the way we see things for the docker

[matevskial]

@TheJoin95 In a previous PR I made y2s to accept episode id through environment variable too, so it is possible to specify an episode id. Next we should update the documentation on how to use the standalone docker image amd then we can do an official release :D