The data.forgejo.org/forgejo/runner image doesn't auto-register from
env vars — it needs create-runner-file called explicitly before the
daemon starts. The entrypoint handles registration on first run (no
/data/.runner file) then execs the daemon on all subsequent starts.
https://claude.ai/code/session_01FKCW3FDjNFj6jve4niMFXH
