We use a script to update variables at runtime that usually can only be
injected at build time. Since we’ve migrated to Vite as build tool the
paths the string substitution has been performed on have changed.

The paths have now been updated and should be future-proof, as we take
the whole dist directory into account.

Nginx in the Docker-container now ONLY deploys dashboard on
port 80. All configs related to other services will be moved to a
separate container. Certbot has been removed from the Dockerfile.

Fixes #105