Create a Docker container

[AndersBennedsgaard]

It should be possible to use the CLI without having node and a lot of other dependencies installed on your pc.

Therefore, it could be nice if you could create a Docker container on release of new versions, such that we can just use docker run ghcr.io/cognigy/cognigy:v1.5.3 [command] or similar. That would also remove the "it works on my machine" problem that can arise when installing from source (which a couple of colleagues and I are struggling with)