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Add a warning about environment variables casing for static configuration

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Anchal Sharma 2024-10-30 15:24:04 +05:30 committed by GitHub
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docs/content/reference/static-configuration/env.md
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@ -5,4 +5,23 @@ description: "Reference the environment variables for static configuration in Tr
# Static Configuration: Environment variables
!!! warning "Environment Variable Casing"
Traefik normalizes the environment variable key-value pairs by lowercasing them.
This means that when you interpolate a string in an environment variable's name,
that string will be treated as lowercase, regardless of its original casing.
For example, assuming you have set environment variables as follows:
```bash
export TRAEFIK_ENTRYPOINTS_WEB=true
export TRAEFIK_ENTRYPOINTS_WEB_ADDRESS=:80
export TRAEFIK_CERTIFICATESRESOLVERS_myResolver=true
export TRAEFIK_CERTIFICATESRESOLVERS_myResolver_ACME_CASERVER=....
```
Although the Entrypoint is named `WEB` and the Certificate Resolver is named `myResolver`,
they have to be referenced respectively as `web`, and `myresolver` in the configuration.
--8<-- "content/reference/static-configuration/env-ref.md"