The challenge listener defaults to :443, which a non-root UID cannot
bind on OpenShift or Podman, so Let's Encrypt could not work in the
UBI image. Now that the listener address is configurable, default it
to empty so the TLS listener on port 10000 answers the challenges
itself when public port 443 is forwarded to it.
Main now ships UBI images for the client, combined server and proxy with
a shared license collector and a common shape, so the signal variant
should look the same to reviewers and to Red Hat certification. Signal
also listens on port 80 by default, which an arbitrary non-root UID
cannot bind on OpenShift or Podman.
Use release_files/collect-licenses.sh instead of a signal-only copy,
build for amd64 and arm64 like the other UBI entries, and run as
1000:0 with a group-writable /var/lib/netbird that also holds Let's
Encrypt data. Default NB_PORT to the legacy gRPC port 10000 so the
image starts unprivileged and serves a single listener.
Keep the existing signal image unchanged while making a separate UBI image available for local certification-readiness checks. Collect the linked Go dependency license terms as portable build inputs, and use SIGINT for the existing graceful stop handler.
jnfrati