Add GitHub action for generating docker image

[nozwock]

Rest looks fine.

[nozwock]

Also consider renaming package name to yanu-docker.

[arturkasperek]

Also consider renaming package name to yanu-docker.

That one doesn't make sense in my opinion cause that information will be redundant

[nozwock]

That one doesn't make sense in my opinion cause that information will be redundant

Well I thought it'd make it more obvious, that it's a docker package without having to look at the readme