Update and Document Environment Variable Configuration

[PrakharSachan5342]

The comments explain the purpose of the environment variables and the fact that they can be overridden by local configuration in .env.local.

Existing variables like NEXT_PUBLIC_DISCOURSE_HOST, DISCOURSE_HOST, and GSOC_LEADERBOARD_BASE_URL remain unchanged.

A comment is included to indicate where you can add new custom environment variables and specify their values. You can follow the same pattern to add new variables if needed.

Remember to replace 'new_variable_value' with the actual value you want to assign to a new variable.

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Environment Variables Configuration

The following environment variables are defined here to provide default values and support certain features out of the box. Please note that these variables can be overridden by values defined in a local configuration file, .env.local.

For more information on environment variables in Next.js, refer to: https://nextjs.org/docs/basic-features/environment-variables#default-environment-variables

Publicly Accessible Discourse Host URLs

These URLs are used as defaults for Discourse host configurations.

NEXT_PUBLIC_DISCOURSE_HOST='https://forums.rocket.chat'
DISCOURSE_HOST='https://forums.rocket.chat'

GSOC Leaderboard Base URL

This variable specifies the base URL for the GSOC (Google Summer of Code) leaderboard.

GSOC_LEADERBOARD_BASE_URL='https://gsoc.rocket.chat'

Add your custom environment variables below (if needed):

NEW_VARIABLE_NAME='new_variable_value'