[QUESTION] - BASE_URL: when using tunnel

[Fuckingnameless]

First Check

• This is not a feature request.
• I added a very descriptive title to this issue (title field is above this).
• I used the GitHub search to find a similar issue and didn't find it.
• I searched the Mealie documentation, with the integrated search.
• I already read the docs and didn't find an answer.
• This issue can be replicated on the demo site (https://demo.mealie.io/).

What is the issue you are experiencing?

how should one set BASE_URL: when using cloudflared tunnel?

Steps to Reproduce

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Please provide relevant logs

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Mealie Version

No response

Deployment

Docker (Linux)

Additional Deployment Details

No response