Go listens on any unspecified address with one socket that answers
IPv4 and IPv6, so BIND_ADDRESS=0.0.0.0 also bound every IPv6 address,
which the README says it does not. The listener now uses tcp4 for an
IPv4 address; :: still binds both.
The image's health check asked for localhost, which wget reached over
::1 only, so it now asks for 127.0.0.1. The README says what that
means for a loopback bind in a container, drops the bindv6only
condition from :: (Go sets that socket option itself), and names an
ss check.
Model: opus-5-5
clawbot