Thank you. that worked. A pitty gpgv can't read from fd using process substitution
7b7e16ae923d:/data/loglib# gpgv --keyring <(gpg -o - --dearmor ../ecs.keys) jul-ecs-formatter-1.5.0.jar.as c jul-ecs-formatter-1.5.0.jar gpg: WARNING: unsafe permissions on homedir '/root/.gnupg' gpgv: Signature made Sun Aug 21 07:52:24 2022 UTC gpgv: using RSA key 46095ACC8548582C1A2699A9D27D666CD88E42B4 gpgv: Can't check signature: No public key
But I had two steps even before, so this could work.
7b7e16ae923d:/data/loglib# gpgv --keyring ../ecs.keys.gpg jul-ecs-formatter-1.5.0.jar.asc jul-ecs-formatte r-1.5.0.jar gpgv: Signature made Sun Aug 21 07:52:24 2022 UTC gpgv: using RSA key 46095ACC8548582C1A2699A9D27D666CD88E42B4 gpgv: Good signature from "Elasticsearch (Elasticsearch Signing Key) <dev_ops@elasticsearch.org>"