Unquoted variable expansion is safe here since the value contains
no spaces or glob characters, but quoting is the correct default
and keeps the script consistent with surrounding style.
Addresses review suggestion by Felix Brandt and Tobias Wendt.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
If `ip route show default` returns no output the old code passed
an empty string to curl --resolve, producing a confusing error 6
("couldn't resolve host") with no indication that gateway detection
had failed. The new guard exits immediately with a clear message.
Addresses review concern raised by Tobias Wendt.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Job containers run in bridge network mode (runner-config.yaml). Inside
a bridge-networked container 127.0.0.1 is the container's own loopback;
Caddy on the host is unreachable there, causing an immediate ECONNREFUSED.
Use the Docker bridge gateway IP instead — the host's docker0 interface
where Caddy (bound on 0.0.0.0:443) is reachable from the container.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
