forked from unom/punktfunk
The catalogue-verify step has failed on every stable tag since it landed, v0.20.0 included: `bash: line 6: GITHUB_REF_NAME: unbound variable`, twice, then exit 1. `env:` populates the RUNNER's environment. appleboy/ssh-action executes its `script` on the REMOTE host over SSH, which inherits none of it — the action has a separate `envs:` input naming the variables to forward. Without it the `set -u` at the top of the script turns the first expansion into a fatal, and the two `curl`s either side report only the collateral: `Failed writing body` is curl losing its pipe when the `grep` it was feeding died. The failure is maximally misleading, because everything it guards ALREADY WORKED: the catalogue is built, tested and shipped in the preceding steps, and only the proof-of-serving fails. Confirmed by hand against the live source during the v0.20.0 release — it serves unom.PunktfunkHost 0.20.0 correctly. The pattern was already right everywhere else: both "Pull and start docs" steps (deploy-services.yml, docker.yml) pair `env:` with `envs:`. A sweep of the other three ssh-action steps found no further instance — the remaining two pass no variables at all.