Non-docker executors & DNS

[kofalt]

From my runtime notes:

You now have a network address access, but not DNS.
Inside the container, here is my immediate way to fix that:

echo "nameserver 8.8.8.8" > /etc/resolv.conf

Checking if the rootFS resolve.conf (or distribution-specific? ugh) file is valid and defaulting to correcting it might be sane. Unless there's a better way to do this, which wouldn't surprise me.

At some point we should sufficiently research the ecosystem to decide our best course of action.
--net=host alleviates this, if we're committing to that we should update these notes.

Complicated by > 1 current & future executors.