Bundle assets / Docker Image

[BuJo]

This adds a docker image.

• Includes an example project
• Enables running in a container environment
• make docker
docker run --rm -p 3000:3000 tales
podman run --rm -v $HOME/Tales:/work:Z -p 3000:3000 tales
• Note that this does not include a way to actually publish the tales container in a public registry
• Note that the container does not run the tales-server as root, so the mounted volume must prepare the volume correctly (especially when writing)

[BuJo]

Allright, I created a readonly demo instance, thanks synyx for providing the resources.

• https://tales-demo.synyx.codes/#

I mentioned in the readme as well, works like a charm. It might be better however, to add the concept of a readonly instance into the application. Right now it just trusts that the files are not writeable by the user to make it readonly. However, that can wait for another PR.