Installation instructions fail on Fedora - rpm --eval '%{rhel}' returns empty

[agoel41]

Where is the problem?

https://developer.konghq.com/gateway/install/#linux

What happened?

Problem
The Linux installation instructions at https://developer.konghq.com/gateway/install/#linux fail on Fedora.

The repo setup command uses:
$(rpm --eval '%{rhel}')
This returns an empty value on Fedora, causing the yum repo to be misconfigured.

Error

No match for argument: kong-enterprise-edition-3.13.0.0
Error: Unable to find a match: kong-enterprise-edition-3.13.0.0

Solution

Manually specifying codename=9 in the URL works:
curl -1sLf "https://packages.konghq.com/public/gateway-313/config.rpm.txt?distro=el&codename=9" | sudo tee /etc/yum.repos.d/kong-gateway-313.repo

What did you expect to happen?

Add a note for Fedora users to use codename=9 instead of $(rpm --eval '%{rhel}').

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