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feat: Enable reading env vars from files (#4359)

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Co-authored-by: Brennan Kinney <5098581+polarathene@users.noreply.github.com>
Co-authored-by: Georg Lauterbach <44545919+georglauterbach@users.noreply.github.com>
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Alessio Artoni 2025-05-17 23:37:43 +02:00 • committed by GitHub
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docs/content/config/environment.md
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@ -6,6 +6,10 @@ title: Environment Variables
Values in **bold** are the default values. If an option doesn't work as documented here, check if you are running the latest image. The current `master` branch corresponds to the image `ghcr.io/docker-mailserver/docker-mailserver:edge`.
!!! tip
If an environment variable `<VAR>__FILE` is set with a valid file path as the value, the content of that file will become the value for `<VAR>` (_provided `<VAR>` has not already been set_).
#### General
##### OVERRIDE_HOSTNAME