[Crystal-ci] Re: command

...

I just tried debian docker, the DNS is not available:

wfg@debian ~% ping host.docker.internal ping: host.docker.internal: Name or service not known

it's the host machine: crystal-ci I test on my own server, add "host_ip host.docker.internal" in /etc/hosts, then execute "ping host.docker.internal" in docker container, it will goes well"

Don't rely on manual configs in the host side.

How about this in docker?

wfg@debian ~% ip route get 1.2.3.4 1.2.3.4 via 172.17.0.1 dev eth0 src 172.17.0.61 uid 1000 cache => wfg@debian ~% ip route get 1.2.3.4 | awk '{print $3; exit}' 172.17.0.1

Thanks, Fengguang