feathers

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Summary

HOSTNAME is available in most Posix systems by default, so it can override your config/default.json OOTB. This is not a well known fact and a new feature in Dove. This conditions combined cause unexpected bindings, errors and interactions with other parts of your server/app/system.

Suggested solution

Namespace them.

Additional details

This reminds me of another feathers-configuration feature, relating to path resolution, that caused unexpected issues. I chose not to include OAUTH secrets as the origin definition seems imperfect, as it somewhat duplicates the top level origins.

https://github.com/feathersjs/feathers-chat/blob/dove/feathers-chat-ts/config/custom-environment-variables.json