/debug: Added a /debug page that's only accessible if a fatal error in configuration has occurred.
settings: The settings page now includes a debugging section with similar content to the debug page. This still needs styling but is otherwise OK.
change(docker): The Docker image provides a default CONFIG_FILE value, along with a volume for it
change(docker): The Dockerfile is now based on the node:16-alpine image instead of lts-alpine, to ensure stability.