If I understand the docs correctly, Koyeb ENVs are only available at runtime, my tests show this too.
It would be nice to have it at build time because Sentry uploads source maps during the build and matches them to a release ID, I use the git commit sha for this release ID.
Hi @letto, thanks for reaching out! This is correct. We just made a feature request for having them at build time, you can vote for it here and you will be notified as soon as it is available.