commandline: path to config

[Inveracity]

Add commandline functionality to specify a path to a config

blackbox --config=path/to/config.yml

and of course have a sensible default

[lemonsaurus]

This is blocked by #31, the way it's currently specified, but I need a solution to this very soon, since it's blocking deployment for python-discord. For kubernetes, I can't put files into the root folder easily with volume mounts, I need to put them in subdirectories.

Here are two approaches I'm considering:

Just rglob the whole folder looking for the config file.

We could just make the config parser use pathlibs excellent .rglob to recursively search through every folder (except maybe .venv) looking for something like blackbox.yaml. Then, if it finds it, use that. That way, the user can put the file anywhere they want inside the blackbox folder and it'll work fine.

Allow an environment variable to specify the path

We could implement this as an environment variable at first, and then later we can add the commandline flag as well.

[lemonsaurus]

the rglob idea is more fun, but I don't know if it's useful. the rglob method does not allow you to configure a path outside the /blackbox folder, which may be useful.

Let's just implement an env var that it will respect for now, and then we can extend that method to a flag for the CLI tool later.